Which fuses power the headlight/DRL circuit in this diagram?

Three 15A fuses in the fuse box: positions 12 (wire W/Bl), 11 (wire W/R), and 18 (wire B/W).

What connectors are used for the left and right headlights?

The left headlight (LH) uses connector E29 and the right headlight (RH) uses connector E03; each shows pin 3 on the feed side and pins 1 and 2 on the ground/switch side with R and R/W wires.

What connector is the DRL control unit on?

The DRL CONTROL UNIT connects via connector E63, with inputs on pins 2, 9, and 7 and outputs on pins 1, 11, and 3.

What positions do the dimmer and lighting switches have?

The DIMMER & PASSING SWITCH has LO, HI, and PASS positions; the LIGHTING SWITCH has OFF, TAIL, and HEAD positions. Both are on connector E40.

Is there a resistor in the DRL circuit?

Yes, a RESISTOR at connector E80 (pins 1 and 2) is fed by an R/Bl wire from DRL control unit pin 3 and grounds through a B wire.

Home/ Registry/ Suzuki/ Samurai/ 1986-1995/ “Little Blue”/ Photo supermotors.net/registry/media/420667

Suzuki Samurai Headlight & DRL Control Unit Wiring Diagram - Fuses, Switches

Wiring diagram: headlights, DRL control unit, dimmer and lighting switches and combination meter

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Wiring diagram of the headlight and daytime running light system showing the DRL control unit, headlights and lighting switches.

AI caption August 2006 · Photo 36 of 86

This document is a single-page automotive wiring diagram showing a headlamp circuit with a Daytime Running Light (DRL) control unit, uploaded as "Headlamp DTR.gif" for a 1986 Suzuki Samurai. Power feeds from the fuse box via three 15A fuses (positions 12, 11, and 18) on wires W/Bl, W/R, and B/W. The circuit includes the left-hand headlight (connector E29) and right-hand headlight (connector E03), each with a three-pin connection, plus high-beam (BEAM) and DRL indicator lamps in the combination meter (connectors G09 and G11). A central DRL CONTROL UNIT (connector E63) manages headlight operation, receiving inputs on pins 2, 9, and 7 and sending outputs through pins 1, 11, and 3. Below it, a combined DIMMER & PASSING SWITCH (LO/HI/PASS positions) and LIGHTING SWITCH (OFF/TAIL/HEAD positions) at connector E40 control lighting modes, and a RESISTOR (connector E80) sits in the DRL circuit on the right side. Wire colors identified throughout include W/Bl, W/R, B/W, R, R/W, O/W, R/G, Br/Y, R/Bl, and B, with multiple chassis grounds at the bottom. A reader can trace fuse feeds, connector pin numbers, wire colors, and switch logic for diagnosing headlamp or DRL faults.

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Frequently asked questions

Which fuses power the headlight/DRL circuit in this diagram?: Three 15A fuses in the fuse box: positions 12 (wire W/Bl), 11 (wire W/R), and 18 (wire B/W).
What connectors are used for the left and right headlights?: The left headlight (LH) uses connector E29 and the right headlight (RH) uses connector E03; each shows pin 3 on the feed side and pins 1 and 2 on the ground/switch side with R and R/W wires.
What connector is the DRL control unit on?: The DRL CONTROL UNIT connects via connector E63, with inputs on pins 2, 9, and 7 and outputs on pins 1, 11, and 3.
What positions do the dimmer and lighting switches have?: The DIMMER & PASSING SWITCH has LO, HI, and PASS positions; the LIGHTING SWITCH has OFF, TAIL, and HEAD positions. Both are on connector E40.
Is there a resistor in the DRL circuit?: Yes, a RESISTOR at connector E80 (pins 1 and 2) is fed by an R/Bl wire from DRL control unit pin 3 and grounds through a B wire.