1. mikewadkins

    mikewadkins Active Member

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    My interior lights are driving me crazy. The lights seem to work with door switches. I can open doors they go on close they go off. About hour later i look my lights are on. Open door close door they stay on. Only way to turn off is disconnect battery. Then door switch works again. Then starts all over again. Need help with wire diagram.
     
  2. AAndrews

    AAndrews Supercuda

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    What year and model of car??
     
  3. mikewadkins

    mikewadkins Active Member

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    68 barracuda
     
  4. RedFish

    RedFish Well-Known Member

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    A delay timer is part of lighting package. That's your problem. The lights are supposed to stay on for a couple minutes with door switch cycle, then go off and stay off until next door switch cycle. timer goes bad lights come back on or just wont go off.
    I can't say exactly where under the dash this little bugger is located.
     
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    • AAndrews

      AAndrews Supercuda

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      Ok, try this.
      Remove the door switches, one at a time and disconnect it. Tape up the wire end so it doesn't short out , tie a string around the wire end and drop it into the threaded hole in the A-piller so you can fish it out after. Close the door and see if the lights come back on. This method will eliminate the door switches. A meter will only show you continuity while pushing the plunger into the switch. You may not be pushing the plunger in deep enough when closing the door or it may only be making intermittent contact.

      Second thing is the headlamp switch. It has a setting for turning on the interior lights that may be defective, possibly shorting out somehow.

      Cheers!!
       
    • AAndrews

      AAndrews Supercuda

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      Did the 68 Barracuda's come with that delay circuit? I've never seen one.
       
    • RedFish

      RedFish Well-Known Member

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      Yep, not all but those with this lighting package even had a little light in the top of that plastic ign' switch bezel. My 68 parts car had it but the instrument panel was removed. The timer just laying between ign' switch and ash tray area. It surely mounts in a clip of some sort.
       
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      • mikewadkins

        mikewadkins Active Member

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        I disconnect both switches and lights stay on.
         
      • mikewadkins

        mikewadkins Active Member

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        What does it look like? Just strange the light works with doors then after little bit the lights stay on
         
      • RedFish

        RedFish Well-Known Member

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        Last edited: May 15, 2019
      • mikewadkins

        mikewadkins Active Member

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      • RedFish

        RedFish Well-Known Member

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        Same part applies up to 86 model, so cheapest source would be a parts yard if you can find it under those dashes.
         
      • mikewadkins

        mikewadkins Active Member

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        But light turns on and off just fine. No delay goes back on by its self hour later
         
      • RedFish

        RedFish Well-Known Member

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        I don't need to argue. Other members who have experienced this very same battery killing issue will chime in here. Good luck.
         
      • mikewadkins

        mikewadkins Active Member

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        Thanks for help it was working fine before i painted car. No delayed light before. Looking for diagram of yellow n pink wire
         
      • AAndrews

        AAndrews Supercuda

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        If you didn't have lamp delay before the problem started, that's not the issue.
        Did you have the wiring harness out of the car when you painted it ? Was the car disassembled ?
         
      • mikewadkins

        mikewadkins Active Member

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        Yes i took wire harness out and fixed wires that were bad. Im confused on why it works then shorts out little later.
         
      • AAndrews

        AAndrews Supercuda

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        It happens Mike !

        I'm no expert but have done a lot of repairs and fixes on A-Body harnesses, especially 67-69 Cudas. This is something simple . My guess is that something is not connected properly (you said it yourself.. everything worked before you took it apart). Retrace the way you re-installed the harness and pay particular attention to the pink and yellow circuits. That's what controls the light circuit. I would re-install the door light switches get everything working, close the doors and wait for the lights to come on. Then, remove the fuses one by one until the lights go out. This is the circuit feeding the lights and the one to check carefully. Keep us posted.
         
      • Mopar-Mitch

        Mopar-Mitch Well-Known Member

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        Those door jamb switches adjust their self when you close the door. It's a cylinder that slides then when door opens it breaks contact. I've saw these go bad from wear and not keep their position, that sliding cylinder gets loose. I'd look into that if I were you.
         
      • AAndrews

        AAndrews Supercuda

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        I was thinking the same thing but Mike said the problem occurred even after removing the switches all together.
         
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        • moparmat2000

          moparmat2000 FABO Gold Member FABO Gold Member

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          Same time delay relay on my 88 shelby z w light package. I believe it goes up to 1994. Time delay relay only works ignition swith light. Not dome lamp. You likely have an issue with the headlight switch rheostat, or a door switch shunting to ground. If the door switces use 2 wires with flat spades its a light package setup. If its a single barrel connector switch, the car does not have a light package
           
          Last edited: May 15, 2019
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          • mikewadkins

            mikewadkins Active Member

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            I pulled the wire harness apart and traced all the wires. Pulled one fuse at time removed both door switches. Touched the light housing in back pannel...click lights go off. Simple wire on housing was grounding out. Lesson learned K.I.S.S now need to clean it all back up. Thanks for help
             
          • AAndrews

            AAndrews Supercuda

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            Glad to hear you found the problem. Most of the problems like this where everything worked before taking it apart are usually fixed this way. Ask me how I know LOL!!
             
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