What fuses protect the headlamp circuit in this diagram?

Two 15-amp fuses in the fuse block feed the headlamp circuit via R/W and R/B wires.

What wire colors go to each headlamp?

The right-hand headlamp (connector 3M) uses B, R/G, and R/Y wires; the left-hand headlamp (connector 12M) uses R, B, and R/L wires.

What connector serves the light combination switch?

Connector 69M, carrying R/B, R/Y, R, R/G, R/L, and R/W wires, connects to the combination switch (Light).

How does the high beam indicator differ with and without a tachometer?

The diagram shows two branches: (T) with tachometer and (WO) without tachometer, each carrying OR/L and B wires through connector 6I to the high-beam indicator in the combination meter.

Where does the headlamp circuit ground?

Through body ground connectors 13M and 55M via black (B) wires.

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Nissan Micra Headlamp Wiring Diagram - Combination Switch & Fuses (EL-40)

Nissan headlamp combination switch wiring diagram EL-40

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Headlamp/combination switch wiring diagram showing battery, fuse block, R.H. and L.H. headlamps, body grounds, combination meter high-beam circuits and switch position table.

AI caption February 2006 · Photo 386 of 412

This document is page EL-40 from a Nissan factory service manual, Electrical (EL) section, showing the headlamp wiring diagram. The diagram traces power from the battery through two 15-amp fuses in the fuse block, via R/W and R/B wires, to the light combination switch (connector 69M) and on to the right-hand headlamp (connector 3M, wires B, R/G, R/Y) and left-hand headlamp (connector 12M, wires R, B, R/L). A contact-logic table for the combination switch shows continuity across terminals 5–12 in OFF, 1ST, and 2ND switch positions (columns A, B, C). Circuits ground through body ground connectors 13M and 55M. The main harness (54M) and instrument harness (1I) carry OR/B, OR/L and B wires to the combination meter's high-beam indicator, with separate paths shown for vehicles with a tachometer (T) and without a tachometer (WO), each through connector 6I. The illustration reference number is SEL508I. A reader can learn wire colors, connector numbers, fuse ratings, and switch contact positions for diagnosing headlamp and high-beam indicator problems. Text in the right margin column is cut off by the scan edge and mostly illegible.

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Frequently asked questions

What fuses protect the headlamp circuit in this diagram?: Two 15-amp fuses in the fuse block feed the headlamp circuit via R/W and R/B wires.
What wire colors go to each headlamp?: The right-hand headlamp (connector 3M) uses B, R/G, and R/Y wires; the left-hand headlamp (connector 12M) uses R, B, and R/L wires.
What connector serves the light combination switch?: Connector 69M, carrying R/B, R/Y, R, R/G, R/L, and R/W wires, connects to the combination switch (Light).
How does the high beam indicator differ with and without a tachometer?: The diagram shows two branches: (T) with tachometer and (WO) without tachometer, each carrying OR/L and B wires through connector 6I to the high-beam indicator in the combination meter.
Where does the headlamp circuit ground?: Through body ground connectors 13M and 55M via black (B) wires.