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Help with headlight wiring......(long) (archive)

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Posted by Erik Brannfors - Seattle on August 27, 2001 at 15:33:59:

In the process of refurbishing my M3, I have gotten a few "wires crossed". Ha Ha. Anyway, right now the low beams work when the headlights are on, but when switching to hi beams, the hi's come on and the low's go off. The low beams have 3 wires (brown ground and 2 striped "hot" wires) from the harness to 3 seperate connectors in the plug. The hi beams also have 3 wires (brown ground and 2 striped "hot" wires) but the two striped wires are crimped into the same connector.

If I play with the order of how the two lead connectors from the headlights are plugged into the main wiring harness, I can get it so that on low beams, no lights are on, but switch to hi beams and all 4 headlights come on. I have the ETM, but I am having a bit of a hard time visualizing the connections setup.

I am thinking that there needs to be some type of crossover wire going from the third connector of the low beam plug to the high beam plug, but I can't see it. Can any of you take a quick picture of the headlight bucket area and the connectors that the headlight pigtails plug into? Thanks!


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