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Electrical Issue of the Century

This is a discussion on Electrical Issue of the Century within the General Help forums, part of the LSx Technical Help Section category; Let see if you guys can figure this one out...I'm stumped. I'm not going to type out a story, just ...

  1. #1
    Sold: LS1 '85 El Camino ls1camino's Avatar
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    2000 Trans Am WS6 M6

    Electrical Issue of the Century

    Let see if you guys can figure this one out...I'm stumped.

    I'm not going to type out a story, just the facts.

    1. Parking Lights and Fog Lights on:
    -Passenger Fog Light is slightly dimmer than the driver's side Fog Light. I checked the voltage and there is about half a volt less on the passenger side. Also, the DRLs are the same brightness as the Fogs (driver's side is slightly brighter than the passenger side).

    2. Headlights on w/ Fogs on:
    -Driver's side low beam is perfect, passenger side lowbeam is dim, and both high beams are dim. Now keep in mind the high beam switch is not activated and light on dash is not on. Passenger Fog Light is out and the DRL is dim as well. Also when I turn the passenger flasher on, the headlights flash with the DRL.

    3. Whenever I disconnect a fog or headlight, the engine shuts off. With the engine off, if I disconnect and reconnect the headlight master connector, the ignition relay clicks on and off.

    The car runs fine, no problems anywhere else with the car *knock on wood*

    Anyone? I'd really like to get this fixed.

  2. #2
    Veteran Hi-Po's Avatar
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    3. Whenever I disconnect a fog or headlight, the engine shuts off. With the engine off, if I disconnect and reconnect the headlight master connector, the ignition relay clicks on and off.


    Well, somehow, your igniton is running threw this circuit. When you remove the lamp(load) you are putting an OPEN in the circuit. Pretty stange yes. Whenever this happens to me at work, I just run new wiring. I just had a problem with a SHIT load of lights on a big front end loader. ( picks dirt up and dumps it). The only lights I had were, one back tail light. and two of the 6 flood lights. Zero turn signals. I finally said fuck buying a new 1200 dollar harness and ran a power wire down to lights. BOOM. All the turn signals stayed on. Direct short. Somewhere two wires where touching. I ended up re-wiring the whole damn shit, it was completely a rigged up setup. But it worked. Sounds like you have a wiring problem MIXED with a Corrosion problem. Dimed lights are 8/10 times a corrosion problem. Try running a jumper wire to you lights. ( A home made wire that can potentially point out a problem in a circuit. You may wanna end up just running new wiring. After all, Its just a lighting circuit. No picky sensors to worry about.

  3. #3
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    Sounds to me like another ground issue. I've had simular problems with cars. I would check the ground G105 which is attached to the top right side of the radiator support.
    Both the RH high and low beam HL, the RH fog, and the RH t/signal all ground at that G105 ground. If that ground is loose or missing for example, the RH low beam will try to find ground through the RH high beam bulb over to the LH high beam and than to the ground for the LF lights. Thats why all those lights are on dim.
    Follow me??

  4. #4
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
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    Sounds like ground issue to me also.....

  5. #5
    Member DaddySS's Avatar
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    x3 for ground

    The relay is grounding through the lights. Check clean and tighten all of the grounds.

  6. #6
    Senior Member Redphoenix1998's Avatar
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    I would say ground as well. Dim headlights are always a good dead giveaway of a bad ground. If you need a wiring diagram let me know and I'll PM you

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