a shot in the dark... - Team Camaro Tech
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post #1 of 7 (permalink) Old Jan 10th, 01, 11:47 AM Thread Starter
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Join Date: May 2000
Location: North Texas
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I'm hoping maybe someone has had this happen to them and will be able to point me right to the cause. My 67 RS has been doing something odd lately. When the key is in the ignition and turned to the first position, the dash lights and the tail lights come on. The light switch is in the fully off position. The headlights will come on as normal when the switch is activated and the dash and tail lights remain on. With the car running, there is no change.
---Here's another twist. IF the light switch is on, and I turn the key to the off position, the engine continues to run and the GEN light comes on. If I push the light switch to the off position, the engine turns off while the key is in the off position.
---If the switch is off before I turn the key to shut the motor off, it turns off normally.
This sounds like a circuit is crossed up due to some kind of short or improper grounding. I suspect the switch but would like to know if anyone else has had this situation.
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post #2 of 7 (permalink) Old Jan 10th, 01, 05:22 PM
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That is strange backfire. I don't have a clue, but, it kinda sounds a little like how the headlight doors work with the key and switch, if you know what I mean. Sounds like something with the headlight switch, or relays, is tied in with the ignition.
Anybody else?

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post #3 of 7 (permalink) Old Jan 11th, 01, 04:39 AM
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Sounds to me like a grounding problem. Current needs a complete path to flow so it is coming from somewhere when the key is turned off.

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post #4 of 7 (permalink) Old Jan 11th, 01, 08:54 AM
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Location: Monroe, WA, USA
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you are grounding out through the headlight circit!!! the head light cirgit is alway's hot...so if you ground out through it from the ignition switch you get some wierd stuff!!! old sparky,as i like to call him, is like watter..go's for the path of least restance..i hate to say this but you have to play spark chaser!!! i would start by tracing the wire's from the igntion switch...you migh have rubed through the insulation and crossed tehm with the headlight wire's...good luck
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post #5 of 7 (permalink) Old Jan 12th, 01, 04:55 AM Thread Starter
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I figure we're all thinking the same thing. Today I'll try to trace everything out and will post the solution when I find it.

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post #6 of 7 (permalink) Old Jan 12th, 01, 09:09 AM
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Do you want to try something really stupid? Run a temporary wire from the headlight ground at the rear of the lamps to the chassis and see what happens. If you have an open ground, everything will work OK with this temporary wire in place.
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post #7 of 7 (permalink) Old Jan 13th, 01, 06:45 PM
David Pozzi
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There is a DIODE in the headlight circut, it is in the wiring harness near the ignition switch, it's taped up. I think it runs from the ign switch to the headlight switch.

Yours might be shorted and passing voltage both ways.
Just a guess, I really haven't had to work on a headlight circut yet.
I have a diagram for the headlights if you need it. http://ourworld.compuserve.com/homep...i/67rswire.jpg


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[This message has been edited by davidpozzi (edited 01-13-2001).]
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