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1985 GMC S15 4WD. H6054 halogen headlight. Need to know what cavities/wires do what clockwise from the top.?

The hard rubber/plastic connector in my GMC S15 for the headlights. What do each of them do (looking at the slots and going clockwise from the one at 12:00, then 3:00, then 9:00). WHY are there two wires for each one? High and low beams?

The reason I ask is the original headlight that was on the driver's side used to work and now it doesn't. I bought two used lamps that were supposed to work and the only way all 3 lamps work is if you jiggle them the right way then they light.

How do I test each cavity using a voltmeter and what DC voltages should I see? I tried google and there were the usual 29 million entries to sell you everything from a headlight to an AC Compressor.

Update:

ok, let me make this even simpler. as you are looking at the headlight connector there are 3 slots- one at 12:00, one at 3:00 and one at 9:00. going clockwise, what do each of the slot DO? Are the positive, negative and ground? if so, which one is WHICH? Next, why are there Two Wires connected to some or all of the connectors inside the cavity? That is all I want to know; no more, no less.

1 Answer

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  • Anonymous
    1 decade ago
    Favorite Answer

    positive and negative most cases you have to get same exact lamps meaning off same vehicle not jimmy rigged or both brand new.make sure you have a driver side lamp and passenger side its possible you have two of the same side also they are used and were probably sitting for awhile clean rust out of lamp connection and adapter finally you want to make sure all wires are fitting nice and tight barely any play

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