What fuse rating protects the tail/clearance lamp circuit in this diagram?

The diagram shows a 15A fuse in the fuse block feeding the combination (light) switch circuit for the clearance, license, tail and marker lamps.

What wire colors are used for the stop and back-up lamps?

The stop lamp circuit uses LG (from the stop lamp switch) and the back-up circuit uses R/L and Y wires, with B wires for ground at the rear combination lamps.

How does the back-up lamp circuit differ between manual and automatic transmissions?

M/T models use a back-up lamp switch (connector 25M, marked M), while A/T models use an inhibitor switch (connector 26M, marked A); both feed the same R/L wire to the rear combination lamp back-up bulbs.

Where does the high-mounted stop lamp get its power?

It is fed by an LG wire from the stop lamp circuit through connectors 90M/9B and 8B, with a B ground wire.

What connector numbers are shown for the rear combination lamps?

The rear combination lamp R.H. connects through connector 85M and the L.H. through connector 81M in both diagrams.

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Nissan Clearance, Tail, Stop & Back-up Lamp Wiring Diagram - EL-42

Clearance, License and Tail Lamp plus Stop and Back-up Lamp Wiring Diagrams (Nissan FSM EL-42)

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Factory exterior-lighting wiring page: clearance/license/tail and side-marker lamp circuit plus stop and back-up lamp circuit with high-mounted stop lamp and A/T inhibitor / M/T back-up switch.

AI caption February 2006 · Photo 388 of 412

This is page EL-42 of a Nissan factory service manual, from the Exterior Lamp (EL) section, containing two wiring diagrams. The top diagram, 'Clearance, License and Tail Lamp/Wiring Diagram' (SEL509I), shows power flow from the battery through a 15A fuse in the fuse block to the combination (light) switch, then to the front clearance/side marker lamps (R.H. and L.H.), rear side marker lamps, rear combination tail lamps, and license lamps, including a combination switch contact table for OFF/1ST/2ND positions (terminals 5-12, contacts A/B/C). Wire colors shown include R, R/W, and B, with body grounds and connector numbers such as 4M, 11M, 13M, 55M, 69M, 79M, 80M, 81M, 85M, 87M, 90M, 9B, and 6B. The bottom diagram, 'Stop and Back-up Lamp/Wiring Diagram' (SEL510I), covers the stop lamp switch, back-up lamp switch (M/T), inhibitor switch (A/T), high-mounted stop lamp, and rear combination STOP/BACK-UP bulbs, fed via two 15A fuses from battery and ignition switch (ON or START), with wire colors LG, R/L, Y, R, and B and connectors 25M, 26M, 72M, 8B, 80M, 81M, 85M, 90M, 9B. A reader can trace tail, license, marker, stop and back-up lamp circuits and identify wire colors and connector locations.

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Frequently asked questions

What fuse rating protects the tail/clearance lamp circuit in this diagram?: The diagram shows a 15A fuse in the fuse block feeding the combination (light) switch circuit for the clearance, license, tail and marker lamps.
What wire colors are used for the stop and back-up lamps?: The stop lamp circuit uses LG (from the stop lamp switch) and the back-up circuit uses R/L and Y wires, with B wires for ground at the rear combination lamps.
How does the back-up lamp circuit differ between manual and automatic transmissions?: M/T models use a back-up lamp switch (connector 25M, marked M), while A/T models use an inhibitor switch (connector 26M, marked A); both feed the same R/L wire to the rear combination lamp back-up bulbs.
Where does the high-mounted stop lamp get its power?: It is fed by an LG wire from the stop lamp circuit through connectors 90M/9B and 8B, with a B ground wire.
What connector numbers are shown for the rear combination lamps?: The rear combination lamp R.H. connects through connector 85M and the L.H. through connector 81M in both diagrams.