Question about 1996 Chevrolet K1500

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''96 Silverado no tail lights.

The b/u, turn and brake lamps work but no tail. Is there a common that only the tail lamps share other than the brown common for the whole assembly?

The hazard switch was damaged during a theft attempt which left no lights at all working except for headlamps and front running lamps. I have replaced the signal switch with a new one ($ ouch $) but no tail lamps still.

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  • 5 more comments 
  • Chris Ballard
    Chris Ballard Dec 11, 2008

    I've checked all fuses and replaced the bulbs. I've looked as much as
    I could get to for an in-line fuse along the chassis to the towing

    If I am understanding correctly, the tail lamps run separately from the
    rest of the tail lamp assembly and operate with the head lamps in a
    "power always on" configuration correct? Since all other lamps are
    working in the head lamp circuit and the tail lamp assembly shares a
    common which is still powering the rest of the assembly, would that
    lead me to the head lamp switch as being the first common connection
    the right and left tail lamps share between them separate from the rest
    of the assembly?

  • Chris Ballard
    Chris Ballard Dec 15, 2008

    I started following the wires from the tail assembly and pulling them out of the cover as I went and found about 8" of brown wire cut out (gone) near the fuel filter. Patched it and they're running now. Now all I gotta do is figure how it got cut.

    Thanks for all your help. It kept me in the right direction.

  • AIKENCOUNTY2 May 11, 2010

    have you checked the fuses? sometimes tail lights have a seperate fuse due to towing acc.

  • Chris Ballard
    Chris Ballard Oct 18, 2013

    I know this is seriously old but I solved the problem by tracing the brown wire from the harness and found a break in the wire under the driver's door. Repaired and works great still. Thanks for the response AIKENCOUNTY2!

  • Chris Ballard
    Chris Ballard Oct 18, 2013

    I solved the problem by
    tracing the brown wire from the harness and found a break in the wire
    under the driver's door. Repaired and works great still.

  • Anonymous Mar 13, 2014

    i replaced all the bulbs in both tail lamps and even the brake lamp switch it still does it

  • Anonymous Mar 27, 2014

    Police alerted me, and I find that none of my Left Rear driving lamps are operating.. Top bulb is tail lamp, Bottom bulb is Tail lamp - Stop lamp - Turn Signal lamp. No lamp activity in that corner when Hazard Warning Flashers is activated. Please advise on chasing signal or send Schematic on this area. or Thank You Very Much.



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If that doesn't help, you might want to check the bulbs. the damage might have shorted which burned out the bulbs. but you do have one wire that runs to the rear and splits off to the tail lights. the wire should run back to the head light switch via a fuse. the headlights have its own relay. but i hope it is just a fuse.

Posted on Dec 11, 2008

  • AIKENCOUNTY2 Dec 14, 2008

    Unfortunately it is now a process of elimination. The brown wire is the magic wire that powers all of your parking lights. This is how it should work. Power comes into your headlight switch on an orange wire. The power comes out of the switch on a brown wire to your parking/tail lights. A yellow wire comes out suppling power to your headlight relay (not worried about yellow wire). But there is more than one brown wire. Without seeing the switch and plug I can't tell you whether one wire comes out and branches off or multiple brown wires come off the switch. I remember one model chevy has a tail light fuse located in the fuse box under the hood. Chevy did this to keep people from burning the switch up due to towing and trailer wiring problems. The wire should run through a fuse before going to the tail lights. Does your truck have a fuse box under the hood and under the dash or both? Do you have a test light or volt meter? You stated it has a trailer harness (factory or aftermarket?), have you checked the trailer plug for tail light power? Check the brown wire at the tail light asmy for power(after unpluging it).Don't forget to turn on the parking lights. Find the tail light fuse? Remove it. All other lights should still work. Inspect the fuse? Put it back in if it looks ok. Is that fuse getting power with the switch on? Remove headlight switch check brown wire(s) coming off switch for power(last thing I would do)? Please let me know what you find out or have any questions? Sorry it took so long to get back with you I just got off a 36hr shift.



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