The Ultimate Relay, Switch, Sensor, and Diodes Guide

SWITCHES, SENSORS, AND RELAYS ID and LOCATION GUIDE:

Headlight Relay:

Location:
- on all XJ550 models: under the gas tank, in-between the frame tubes, on a welded bracket just behind the flasher self-canceller relay.
- on all XJ650 Maxim/Midnight Maxim/RJ Seca models: behind left side cover, below the TCI and Regulator-Rectifier unit.
- on all 1981-83 XJ750 Seca models: behind the left side cover, below the TCI and Regulator-Rectifier unit.

All other models do not use a headlight relay.

Identification:
- small metal "cube" relay, inked 3H5-00 on the top face.
- has a yellow (yellow) paint mark on the bottom terminal connector block.
- normally open; has an internal diode.
- plugs into a connector shell which has the following set of wires going to it:

Harness connector wire colors:
- on all XJ550 all models, XJ650 all models (except Turbo):
* Blue wire with black tracer stripe
* solid White wire
* Red wire with yellow tracer stripe
* solid Black wire

- on all 1981-83 XJ750 Seca models:
* Blue wire with black tracer stripe
* White wire with blue tracer stripe
* Red wire with yellow tracer stripe
* solid Black wire



Turn Signal Flasher Relay:

NOTE: all XJ700 models and XJ750-X models use a consolidated relay assembly (mounted under and to the rear of the fuel tank, on the wishbone frame triple-tube joint) which combines the turn signal flasher, the turn signal canceller relay unit, and the starter circuit cut-off relay.

Location:
- on all XJ550 models: on a tab bracket welded to the rear of the ignition coils rear mounting bracket
- on all XJ650 )except Turbo) and all 1981-83 XJ750 models: on a tab bracket welded to the right side frame tube, towards the front of and under the gas tank (under the ignition coils).
- on all XJ650 Turbo models: onto a welded bracket on the right side of the main headlight support fairing.
- on all XJ700 and XJ750-X models: part of the consolidated relay assembly listed further below.
- on all XJ900 models: under the seat, in the "electrical tray".
- on all XJ1100 models: on a tab bracket welded behind the right side frame cover, near the fusebox.

Identification:
- large rectangular plastic relay, inked "Nippondenso FU257CD and DOT 6944" or similar on the large face.
- plugs into a 3-space, T-shaped black connector shell which has the following set of wires going to it:

Harness connector wire colors:
* Yellow wire with green tracer stripe (for the "C" terminal on the relay)
* Brown wire with white tracer stripe (for the "L" terminal on the relay),
* Black solid wire (for the "B" terminal on the relay).



Turn Signal Self-Canceller Relay:

NOTE: all XJ700 models and XJ750-X models use a consolidated relay assembly (mounted under and to the rear of the fuel tank, on the wishbone frame triple-tube joint) which combines the turn signal flasher, the turn signal canceller relay unit, and the starter circuit cut-off relay.

Location:
- on all XJ550, XJ650 (except Turbo), XJ750 non-X, and XJ1100 models: on a "skinny" tab bracket welded in-between the upper frame rails, to the rear of the ignition coils.
- on all XJ650 Turbo models: on a "skinny" tab bracket welded to the right frame down tube, below the airbox.
- on all XJ700 and XJ750-X models: part of the consolidated relay assembly listed further below.
- on all XJ900 models: under the seat, in the "electrical tray".

Identification:
- on all models except XJ700 or XJ750-X models: a 3" long, 1-1/2" wide rectangular cube relay housed within a soft rubber "sleeve" with 5 wires coming into it from a white or black plastic connector shell on the end of the wires.
- on all XJ700 and XJ750-X models: part of the consolidated relay assembly listed further below.

Harness connector wire colors:
* Black solid wire
* Yellow wire with red tracer stripe
* Yellow wire with green tracer stripe
* White wire with green tracer stripe
* Brown solid wire
- on all XJ700 and XJ750-X models: part of the consolidated relay assembly listed below.



XJ700 and XJ750-X Consolidated Relay Assembly:

This large device combines the flasher relay, the flasher canceller, and the ignition cut-off relay into one big "black box" unit and is no longer a small "cube" type relay as only other XJ models........and it is used only on the XJ700 and XJ750-X models.

Location:
- mounted under and to the rear of the fuel tank, behind the wishbone frame triple-tube joint.

Identification:
- large rectangular black plastic relay, inked 41R-71 and then "ND FX257N"

Harness connector wire colors:
* Red wire with white tracer stripe (starter cut-off relay)
* Blue wire with white tracer stripe (starter cut-off relay)
* another Blue wire with white tracer stripe (starter cut-off relay)
* Black wire with yellow tracer stripe (starter cut-off relay)
* Black solid wire (common ground)
* Yellow wire with red tracer stripe (self-canceller)
* Brown wire with white tracer stripe (signal flasher)
* White wire with green tracer stripe (self-canceller)
* Brown solid wire (signal flasher)



Oil Level Sensor:

Location:
- in the oil pan, secured by two hex-headed bolts.

Identification:
- a round cylinder with a single lead wire coming off the bottom of the sensor housing. The cylinder fits into a round hole in the bottom of the oil pan.

Harness connector wire colors:
* Black wire with a red tracer stripe. NOTE: factory wire diagrams show the main harness wire attaching directly to the sensor---this is not correct. The Black wire with the red tracer stripe is on the main harness, and it attaches (via a bullet connector) to a 40" long (varies by model) "extension wire" of the same color that then runs to the oil level sensor itself. This extension wire is bundled within the pick-up coils harness. The short wire lead coming off the sensor itself may be a variety of colors.



Brake hand lever position Brake Light Switch:

Location:
- on the master cylinder fluid reservoir (on the front edge of the master cylinder body, right side of the handlebar),

Identification:
- round black plastic cylinder with two lead wires (length varies by model) coming off of it. The switch body has two opposed latching "teeth" in it that allows the switch body to latch into the clutch lever perch housing bore hole . The operating end of the switch has a plunger rod. NOTE: to allow the removal of this switch from the housing, there is a small diameter access hole in the master cylinder housing. Sticking a small screwdriver tip (or similar) into the hole pushes back on the latching "tooth" of the switch body, thus allowing the switch body to be withdrawn from the master cylinder housing.

Harness connector wire colors:
* a solid green wire
* a green wire with a yellow tracer stripe
NOTE: wire lead colors may vary on some models and on replacement switches. These wires terminate into a 2-position plastic connector shell that is located within the headlight bucket.



Brake foot pedal position Brake Light Switch:

Location:
- screwed into a welded-on tab bracket on the right frame down tube, generally located somewhere directly above the rear of the brake foot swivel arm. NOTE: on XJ650 Turbo models, this bracket and switch is located a fairly long distance away from the pedal itself, and there is a long wire extension rod that connects the brake pedal swivel arm to the switch plunger.

Identification:
- round black plastic cylinder with a threaded end. The operating end of the switch has a brass plunger, which attaches to a short extension rod and a tension spring.

Harness connector wire colors:
- varies by model. The switch itself typically has two solid black wires coming off of it, which plug into a solid yellow wire and solid brown wire on the main wiring harness.



Clutch hand lever position Switch:

Location:
- by the clutch hand lever (on the clutch lever perch on the left side of the handlebar),

Identification:
- round black plastic cylinder with two lead wires (length varies by model) coming off of it. The cylinder has two opposed latching "teeth" in it that allows the switch body to latch into the clutch lever perch housing bore hole . The operating end of the switch has a plunger rod. NOTE: to allow the removal of this switch from the housing, there is a small diameter access hole in the clutch perch housing. Sticking a small screwdriver tip (or similar) into the hole pushes back on the latching "tooth" of the switch body, thus allowing the switch body to be withdrawn from the housing.

Harness connector wire colors:
* Blue wire with a yellow tracer stripe
* Black wire with a yellow tracer stripe.
NOTE: wire lead colors may vary on some models and on replacement switches. These wires terminate into a 2-position plastic connector shell that is located within the headlight bucket. The wire leads from this switch are interact with the starting/ignition circuit cut-off relay.



Transmission-in-Neutral Switch:

Location:
- on all XJ550 models:
* located inside the engine shifter case side cover.

- on all XJ models except XJ550 models:
* in a recessed "well" in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, on the left side of the bike. Can be very difficult to see or access while the exhaust is on the bike and/or when the engine is in the frame.........the left lower frame tube obscures the vision in this area.

Identification:
- on XJ550 models:
* a white "rounded triangle" shaped flat plastic piece, held in by 3 screws, and a single black wire coming off of it.

- on XJ650 thru XJ1100 models:
* hex-headed "bolt" with a internally threaded head. A phillips-drive screw threads into the head and hold the ring terminal that is on the wire leading to this switch.

Harness connector wire colors:

- on XJ550 models:
* factory wire diagrams show a main harness Sky Blue attaching directly to the switch ---this is not correct. The Sky Blue wire is on the main harness only, and it attaches (via a bullet connector) to a solid Medium Blue wire that attaches to the switch itself.

- on XJ650 thru XJ1100 models:
* factory wire diagrams show a main harness Sky Blue attaching directly to the switch ---this is not correct. The Sky Blue wire is on the main harness only, and it attaches (via a bullet connector) to a Dark Blue wire that then runs to the neutral switch itself. This Dark Blue wire is bundled within the pick-up coils harness.



Sidestand (kickstand) Switch:

Location:
- the switch is attached via two flathead screws to the left lower frame tube, somewhere either just forward or behind that actual kickstand mounting bracket.

Identification:
- cast metal housing with two or three lead wires coming off the housing, leading into bullet connectors (550 models) or plastic connector shells (650 thru 1100 models). NOTE: 1980-81 XJ650 Maxim and Midnight Maxim models did not use a kickstand switch, nor did the XJ900RL, N, or FN models. NOTE: XJ650RJ Seca, XJ650 Turbo, 1981-83 XJ750 all models, and XJ900 models sidestand switch units use a switch plunger extension rod, in addition to the short plunger that is built into the switch itself. This extension rod (about 4" long) is not mechanically attached to the switch plunger rod, and is simply held in place via "tension" between the switch plunger rod and the sidestand actuating cam.

Harness connector wire colors:
- on all XJ550 all models:
* Blue wire with a yellow tracer stripe, terminating in a male bullet connector.
* Solid black wire, terminating in a sheathed female bullet connector.

- on all 1982-84 XJ650 Maxim models, all XJ700 models, all XJ750-X models, and XJ900 models:
* Blue wire with a yellow tracer stripe, terminating in a 2-position white plastic connector shell.
* Solid black wire, terminating in a 2-position white plastic connector shell.

- on all 1982 XJ650RJ Seca models, all XJ650 Turbo models, all 1981-83 XJ750 models, and XJ1100 models:
* Blue wire with a yellow tracer stripe, terminating in a 3-position white plastic connector shell.
* Green wire with a blue tracer stripe, terminating in a 3-position white plastic connector shell.
* Solid black wire, terminating in a 3-position white plastic connector shell.
NOTE: some factory wiring diagrams incorrectly show only two wires leading to the sidestand switch, when in fact there is three wires. Other diagrams incorrectly show three wires leading to the switch, when in reality there is only two wires at the connector, even though it is a 3-place connector shell.



Sidestand (kickstand) Relay:

Location:
- on all XJ550 models: left side, onto a welded bracket just behind the rear frame cross tube.
- on all 1982-84 XJ650 Maxim models: onto a welded bracket outbound of the left outer frame tube, just behind the left coil.
- on all XJ650RJ Seca models: under the front of the tank, behind the turn signal flasher relay.
- on all XJ650 Turbo models: on a tab bracket welded to the right frame down tube, below the airbox.
- on all XJ700 and XJ750-X models: under the left frame side cover, on the plastic regulator-rectifier mounting plate.
- on all 1981-83 XJ750 Seca models: onto a welded bracket outbound of the left outer frame tube, just behind the left coil.
- on all 1982-84 XJ750 Maxim/Midnight Maxim models: under the left frame side cover, on the plastic regulator-rectifier mounting plate.
- on all XJ900 models: under the seat, in the "electrical tray".
- on all XJ1100 models: under the fuel tank, behind the left side ignition coil.

Identification:
- small metal (original) or plastic (replacement) "cube" relay, inked 4U8-00, 4U8-01, or 4U8-02 on the top face.
- has a blue paint mark or blue locking tab shroud on the bottom of it.
- normally closed; does not have an internal diode.
- plugs into a connector shell which has the following set of wires going to it:

Harness connector wire colors:
- on all XJ550, all 1982-84 XJ650, XJ700, XJ750 models, all XJ900, and XJ1100 models:
* Red wire with white tracer stripe
* Black wire with white tracer stripe
* Blue wire with yellow tracer stripe
* solid Black wire



Starting/Ignition Cut-Off/Neutral Safety relay:

NOTE: all XJ700 models and XJ750-X models use a consolidated relay assembly (mounted under and to the rear of the fuel tank, on the wishbone frame triple-tube joint) which combines the turn signal flasher, the turn signal canceller relay unit, and the starter circuit cut-off relay.

Location:
- on all XJ550 models: in front of the coil rear mounting bracket.
- on all XJ650 Maxim/Midnight Maxim/RJ Seca models: under the gas tank, in-between the frame tubes, on a welded bracket just behind the flasher self-canceller relay.
- on all XJ650 Turbo models: on the right side of front fairing main support bracket.
- on all XJ700 and XJ750-X models: part of the consolidated relay assembly listed further below.
- on all 1981-83 XJ750 Seca models: under the gas tank, in-between the frame tubes, on a welded bracket just behind the flasher self-canceller relay.
- on all 1981-84 XJ750 Maxim and Midnight Maxim models: under the gas tank, in-between the frame tubes, on a welded bracket just behind the flasher self-canceller relay.
- on all XJ900 models: under the seat, in the "electrical tray".
- on all XJ1100 models: under the fuel tank, behind the right side ignition coil.

Identification:
- on all models except XJ700 or XJ750-X models:
- small metal (original) or plastic (replacement) "cube" relay, inked 4H7-00, 4H7-01, or 12R-01 on the top face.
- has no colored paint mark on the bottom terminal connector block.
- sometimes labeled or described in manuals and diagrams as a "clutch switch unit", a "neutral safety relay", or an "ignition cut-off" relay.
- normally open; has an internal diode.
- plugs into a connector shell which has the following set of wires going to it:

Harness connector wire colors:
- on all XJ550 all models, XJ650 all models, XJ750 all non-X models, and XJ1100 models:
* Red wire with white tracer stripe
* another Red wire with white tracer stripe
* Black wire with yellow tracer stripe
* solid Light blue (sky blue) wire

- on all XJ900 models:
* Red wire with white tracer stripe
* another Red wire with white tracer stripe
* Black wire with yellow tracer stripe
* solid Light blue (sky blue) wire
* another solid Light blue (sky blue) wire
* White wire with red tracer stripe



Starter Motor Solenoid/Relay:

Location:
- on all models except XJ700 or XJ750-X, or XJ1100 models: housed within a round rubber grommet with a thick, rectangular rubber "foot", the foot being attached to plastic pegs on the side of the battery box.
- on all XJ700 or XJ750-X models: housed within a round rubber grommet with a thick, rectangular rubber "foot", the foot being attached to plastic pegs on the side of the battery box.
- on all XJ1100 models: behind the right side frame cover, to the rear of the fusebox, housed within a round rubber grommet with a thick, rectangular rubber "foot", the foot being attached to plastic pegs.

Identification:
- on all models except XJ700 or XJ750-X models:
- small round metal "can" with a larger brown plastic "base". Two threaded metal studs extend from the back of the base, and a two-wire pigtail wiring harness (with a 2-place white plastic connector shell) extend from the base unit. The top face of the metal "can" may or may not have a plastic or metallic decal affixed to it.

- on all XJ700 or XJ750-X models:
- same as above, except there may be either one or two wires extending off the base unit, and the wire (or wires) will be terminated with a male bullet style connector, rather than a plastic 2-space connector shell.

Harness connector wire colors:
- on all models except XJ700 or XJ750-X models:
* Red wire with white tracer stripe
* Blue wire with white tracer stripe

- on all XJ700 or XJ750-X models:
* Blue wire with white tracer stripe



Fuel pump relay:

Location:
- on all XJ650 Turbo models: on the left side of front fairing main support bracket.

Identification:
- small metal (original) or plastic (replacement) "cube" relay, inked 5A8-00 on the top face.
- has a red paint mark on the bottom of it.
- plugs into the connector shell which has the following set of wires going to it:

Harness connector wire colors:
- on all XJ650 Turbo models:
* Blue wire with black tracer stripe
* Red wire with black tracer stripe
* another Red wire with black tracer stripe
* White wire with blue tracer stripe



Emergency Stop Switch:

This switch is sometimes referred to as a "Ballast Switch" in the service manual. It is activated whenever the tilt angle of the bike is more than about 60-degrees from vertical (so don't lean it too far over in the corners!). If the allowable tilt angle is exceeded....like when you dump the bike....this switch cuts power to the ignition system and, on the XJ650 Turbo model, to the fuel pump.

Location:
- on all XJ650 Turbo models: on the main fairing mounting bracket.
- on all XJ1100 models: under the gas tank, in-between the frame tubes.

Identification:
- small, rectangular switch with two short wires coming off of it and going into a white plastic 2-position connector shell.

Harness connector wire colors:
* Solid black wire
* Black wire with white tracer stripe



Emergency Stop Switch Relay:

Location:
- on all XJ650 Turbo models: under the gas tank, in-between the frame tubes, on a welded bracket.

Identification:
- small metal (original) or plastic (replacement) "cube" relay, inked 4U8-00, 4U8-01, or 4U8-02 on the top face.
- has a blue paint mark or blue locking tab shroud on the bottom of it.
- plugs into a connector shell which has the following set of wires going to it:

Harness connector wire colors:
- on all XJ650 Turbo models:
* Red wire with white tracer stripe
* Red wire with white tracer stripe
* Red wire with black tracer stripe
* White wire with black tracer stripe



Hazard Flasher Relay:

Location:
- on XJ1100 models, behind the battery, on the left side of bike.

Identification:
- small round metal "can" relay with two terminals.

Harness connector wire colors:
* Brown wire with a yellow tracer stripe
* Red wire with a yellow tracer stripe
Note: the black plastic connector shell that is used with this relay is a unique "L" shaped connector, the only one of its kind on the entire bike.



Electrical System Diode Block:

Exposing all their dirty little internal secrets shown here:

http://xjbikes.com/forums/threads/diode-block.47628


Location:
- on all XJ550, all XJ650, 1983 XJ750 Maxim and Midnight Maxim, and all XJ750 Seca models: inside the headlight housing.
- on all XJ700 and XJ750-X models: under the left frame side cover, on the plastic regulator-rectifier mounting plate.
- on all XJ900 models: in the "electrical tray" under seat
- on all 1982 XJ750 Maxim and all XJ1100 models: uses a single diode, sheathed inside a clear sleeve, located just outside the main wiring harness bundle, in the area just behind the fuel tank.

Identification:
- on all models except 1982 XJ750 Maxim and all XJ1100 models: a small, flat, thin rectangular shaped, housed within a soft rubber "sleeve" that is approximately 1" wide x 2" long x 1/8" thick, and has 3, 5, 6 or 7 wires coming out of one end and going into a black or white plastic connector shell.
- on all 1982 XJ750 Maxim and all XJ1100 models: a single diode sheathed within a clear plastic protector sleeve. The diode has bare wires on each end, terminated with bullet connectors.

Harness connector wire colors:

NOTE: for some odd reason, the wire colors on the main harness side of the connector shell may not always match the wire colors on the diode black side of the connector shell, where the diode black "pigtail" wires are joined to the main wiring harness wires. This is most probably due to the diode block being a somewhat "universal" part, used across many different model lines, and functional interchange was deemed more important, by the electrical engineers at Yamaha, than was the wire-lead color compatibility!

- on all XJ550 models: black with a red tracer stripe, another black with a red tracer stripe, blue with a white tracer stripe, blue with a yellow tracer stripe, solid sky blue, solid white, and another solid white wire, all terminating into a 9-space female connector shell.
- on all 1980-81 XJ650 Maxim and Midnight Maxim models: black with a red tracer stripe, another black with a red tracer stripe, blue with a white tracer stripe, solid white, another solid white, all terminating into a 6-space female connector shell.
- on all 1982-84 XJ650 Maxim models: black with a red tracer stripe, another black with a red tracer stripe, blue with a white tracer stripe, blue with a yellow tracer stripe, solid sky blue, solid white, and another solid white wire, all terminating into a 9-space female connector shell.
- on all 1982 XJ650RJ Seca models: same as 1982-84 XJ650 Maxim models.
- on all XJ650 Turbo models: white with a blue tracer stripe, blue with a white tracer stripe, blue with a yellow tracer stripe, solid white, another solid white, and a solid sky blue wires, all terminating into a 6-space female connector shell.
- on all XJ700 and XJ750-X models: black with a red tracer stripe, blue with a white tracer stripe, white with a green tracer stripe, solid green, solid yellow, solid sky blue, and a solid white wire, all terminating into a 9-space female connector shell
- on all 1982 XJ750 Maxim models: a single diode is sheathed within a clear plastic protector sleeve. The diode has bare wires on each end, terminated with bullet connectors, that attach to a solid sky blue wire on one end, and into a blue wire with a yellow tracer stripe on the other end.
- on all 1983 XJ750 Maxim and Midnight Maxim models: black with a red tracer stripe, blue with a white tracer stripe, white with a green tracer stripe, solid green, and a solid white wire, all terminating into a into a 6-space female connector shell.
- on all 1981-83 XJ750 Seca models: white with a blue tracer stripe, blue with a yellow tracer stripe, solid sky blue, and a solid white wire, all terminating into a into a 6-space female connector shell.
- on all XJ900RK and F models: black with a red tracer stripe, blue with a white tracer stripe, white with a green tracer stripe, solid green, and a solid white wire, all terminating into a into a 6-space female connector shell.
- on all XJ900RL, N, and FN models: unknown
- on all XJ1100 models: a single diode is sheathed within a clear plastic protector sleeve. The diode has bare wires on each end, terminated with bullet connectors, that attach to a solid sky blue wire on one end, and into a blue wire with a yellow tracer stripe on the other end.



Thermo unit and Thermoswitch:

Location:
- on all XJ700 water-cooled models and XJ750-X models, both of these sensors are located on the thermostat housing.

For those people who would prefer the above information by model, well, seek no more:

XJ550 models:

Flasher: on a tabbed bracket at the rear of the ignition coils rear mounting bracket.
Flasher canceller: behind ignition coils.
Starter motor solenoid/relay: behind the right side cover, behind the access panel, below the regulator.
Starter/Ignition cut-off relay (no color): front of coil rear mounting bracket.
Sidestand (kickstand) relay (blue): left side, behind rear frame cross tube.
Headlight relay (yellow): behind ignition coils, behind flasher canceller.
Diode block: inside the headlight housing.
Neutral switch: located inside the engine shifter case side cover.



XJ650 Maxim and Midnight Maxim models:

Flasher: near the steering headpipe, on right side frame rail, under the right side ignition coil.
Flasher canceller: under the rear of gas tank, behind ignition coils
Starter motor solenoid/relay: on right hand side, attached to and behind the battery box.
Diode block: inside the headlight housing.
Starter/Ignition cut-off relay (no color): behind the turn signal self-canceller. (note: the drawing and the description in the service manual is wrong).
1980-81 Sidestand (kickstand) relay (blue): did not use.
1982-84 Sidestand (kickstand) relay (blue): frame bracket outbound of LH frame tube, just behind the left ignition coil.
Headlight relay (yellow): behind the left frame side cover, on the plastic regulator-rectifier mounting plate. (note: the drawing and the description in the service manual is wrong).
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".


XJ650RJ Seca and XJ750 Euro models:

NOTE: according to the factory XJ650RJ Seca service manual supplement, both the headlight relay and the sidestand relay are under the tank---this is wrong!

It also shows that the ignition cut-off relay is below the TCI?---this is also wrong!

Flasher: near the steering headpipe, on right side frame rail, under the right side ignition coil.
Flasher canceller: under the rear of gas tank.
Starter motor solenoid/relay: on right hand side, attached to and behind the battery box.
Starter/Ignition cut-off relay (no color): on 650RJ and 650 Euro models, located behind self-canceller, under rear of tank (note: the drawing and the description in the service manual is wrong).
Sidestand (kickstand) relay (blue): behind the flasher relay, under the front of the tank.
Headlight relay (yellow): behind the left frame side cover, on the plastic regulator-rectifier mounting plate. (note: the drawing and the description in the service manual is wrong).
Diode block: inside the headlight housing.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".


XJ650 Turbo models:

Flasher: onto a welded bracket on the right side of the main headlight support fairing.
Flasher canceller: below TCI unit on right side of bike, behind sidestand relay, below the airbox.
Starter motor solenoid/relay: on left hand side, attached to and behind the battery box.
Starter/Ignition cut-off relay (no color): located on right side of headlight/fairing main support bracket.
Sidestand (kickstand) relay (blue): mounted onto a tab bracket welded to the right frame down tube, below the airbox.
Headlight relay (yellow): not used.
Fuel pump relay (red): located on the left side of headlight/fairing main support bracket.
Emergency stop switch: located on the left side of headlight/fairing main support bracket.
Emergency stop switch relay (blue): under gas tank.
Boost pressure sensor: centrally located below the airbox and the battery box.
Diode block: inside the headlight housing.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".


XJ700 and XJ750-X models:

Flasher: combined into the consolidated relay assembly unit.
Flasher canceller: combined into the consolidated relay assembly unit.
Starter/Ignition cut-off relay: combined into the consolidated relay assembly unit.
Consolidated relay assembly: behind the gas tank on the frame tube cross-brace.
Starter motor solenoid/relay: attached to and centrally behind the battery box.
Sidestand (kickstand) relay (blue): under left side cover, above regulator.
Headlight relay (yellow): not used.
Main fuseholder: behind frame crossbar, behind the battery.
Diode block: under left side cover, above regulator.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".
Thermo unit: screws into the thermostat housing.
Thermoswitch: screws into the thermostat housing.


1982-84 XJ750 Maxim and Midnight Maxim models:

Flasher: near the steering headpipe, on right side frame rail, under the right side ignition coil.
Flasher canceller: under the rear of gas tank.
Starter motor solenoid/relay: attached to and behind the battery box.
Starter/Ignition cut-off relay (no color): behind self-canceller, under rear of tank.
Sidestand (kickstand) relay (blue): behind the left frame side cover, on the plastic regulator-rectifier mounting plate.
Headlight relay (yellow): not used.
1982 XJ750 Maxim safety relay single diode: outside the main wiring harness bundle, in the area just behind the fuel tank.
1983-4 XJ750 Maxim Diode block: inside the headlight housing.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".


1981-83 XJ750 Seca and XJ750 Euro models:

Flasher: near the steering headpipe, on right side frame rail, under the right side ignition coil.
Flasher canceller: under the rear of gas tank.
Starter motor solenoid/relay: attached to and behind battery box.
Starter/Ignition cut-off relay (no color): behind coils, behind self-canceller.
Sidestand (kickstand) relay (blue): frame bracket outbound of LH frame tube, just behind the left side ignition coil.
Headlight relay (yellow): behind the left frame side cover, on the plastic regulator-rectifier mounting plate.
Diode block: inside the headlight housing.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".


XJ900 models:

Flasher: in the "electrical tray" under seat.
Flasher canceller: in the "electrical tray" under seat.
Starter motor solenoid/relay: attached to rear of battery box.
Starter/Ignition cut-off relay (no color): in the "electrical tray" under seat.
Sidestand (kickstand) relay (blue): in the "electrical tray" under seat.
Headlight relay (yellow): not used.
Diode block: in the "electrical tray" under seat.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".


XJ1100 models:

Flasher: on a tab bracket welded behind the right side frame cover, near the fusebox.
Flasher canceller: on a "skinny" tab bracket welded in-between the upper frame rails, to the rear of the ignition coils.
Starter motor solenoid/relay: behind the right side frame cover, to the rear of the fusebox, housed within a round rubber grommet with a thick, rectangular rubber "foot", the foot being attached to plastic pegs.
Starter/Ignition cut-off relay (no color): under the fuel tank, behind the right side ignition coil.
Sidestand (kickstand) relay (blue): under the fuel tank, behind the left side ignition coil.
Headlight relay (yellow): not used
Hazard flasher relay (metal "can"): behind the battery, on the left side of bike.
Safety relay diode: outside the main wiring harness bundle, in the area just behind the fuel tank.
Neutral switch: in a hole in the bottom of the crankcase, just "outside" of the oil pan, on the bottom of the engine, up inside a recessed "well".
Emergency stop switch: under the fuel tank, behind the ignition coils.
Manifold pressure sensor: under gas tank, behind left side ignition coil, in front of reg/rectifier
Reserve lighting unit: under the seat.