Really Need Help with Tail Light Problem! - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 9 (permalink) Old Jun 14th, 01, 05:25 AM Thread Starter
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Dave
 
Join Date: May 2001
Location: Frisco, TX
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I have been slowly working through several wiring issues with my recently aquired 68 RS/SS convertible. Now I have hit a brick wall. None of my tail lights, side marker lights, or gauge cluster lights work. The headlights work fine, the flashers work, and my reverse lights work.

I have the wiring diagram, but I am still lost. I have 12 volts at the fuse. I have 12 volts at the light switch (I have tested the light switch in another car and it tested fine, but as soon as I pull the light switch on, the 12 volts goes to zero. It is like something is grounding, but the fuse does not blow. I have removed all the bulbs from the back of the car and checked for shorts, and everything tested fine. Any help would be appreciated. I am really pulling my hair out with this one.

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Dave Richard
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post #2 of 9 (permalink) Old Jun 14th, 01, 10:13 AM
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I have the same switch in my 67 and it's a piece of %#$%. I took mine out and took it apart, cleaned it with electrical cleaner, put it back in and now it kinda works. When I turn the knob it sometimes cuts out my dash lights or my head lights.

I hate electrical work!

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post #3 of 9 (permalink) Old Jun 14th, 01, 04:11 PM
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Bruno
 
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The other, day the stop lights in my 68 stopped working, I made the same measurements as you did and the 12 volts disappeared when I hit the brakes and the fuse didn't burnt out. You know what? The fuse wasn't making a good contact at the terminals in the fuse block. I cleaned them and everything started working OK. I'm still looking for a good rust inhibitor to avoid this in the future. Also make sure you have a good ground; I welded a ground wire to the rear tail light sockets and connected it directly to the car body just to make sure I have enought of it. Good luck...

[This message has been edited by ORENCH (edited 06-14-2001).]
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post #4 of 9 (permalink) Old Jun 14th, 01, 04:45 PM
 
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Lightbulb

Go to your local outboard shop and ask for OMC lubricaing grease p/n 503243. This stuff is great I currently work on outboards and use the hell out of this stuff.

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post #5 of 9 (permalink) Old Jun 15th, 01, 05:14 AM Thread Starter
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Dave
 
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Thanks for the suggestions, but I know it is not the switch. I swapped my switch into a friends car and it worked fine. My plan is to really clean up the fuse panel and check the positive feeds from the connector block. Any other ideas would be GREATLY appreciated.
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post #6 of 9 (permalink) Old Jun 15th, 01, 02:57 PM
CJ
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Cris
 
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There are a couple of grounds that run along the rear tail light harness. Make sure they have good clean contact as well.
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post #7 of 9 (permalink) Old Jun 15th, 01, 06:13 PM
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TOM
 
Join Date: Mar 2001
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Cool

A test light would be handy to trace out were you are losing the power to to rear lights. You say you have power at tHe fuse box, well you'll have to check along to way to the rear lights and see if a line is cut.
Have fun
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post #8 of 9 (permalink) Old Jun 16th, 01, 08:32 AM Thread Starter
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Dave
 
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Smile

Thanks for the help! The problem turned out to be the wire going to the drivers side front marker light. It was worn through from rubbing on the inner fender and was grounding. I found it when I started digging around up there and the tail light fuse blew. I guess I made it short enough to blow the fuse. Taped the wire, replaced the fuse and problem solved.....

Don't you love old cars!!


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Dave Richard
68RS/SS Convertible
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post #9 of 9 (permalink) Old Jun 16th, 01, 07:58 PM
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Join Date: Jun 2001
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Lightbulb

A bad ground on lights will make you pull your hair out... Make sure you take off and clean (bare metal contact required)all your ground wires.. 99% sure this will fix your problems... When through this my self...
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