Gauge Cluster Lights - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

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post #1 of 3 (permalink) Old Nov 28th, 09, 11:31 AM Thread Starter
terrellda's Avatar
Join Date: Apr 2007
Location: Jacksonville, NC
Posts: 26
Gauge Cluster Lights

I have a 1968 Camaro Convertible RS. When I turn on the parking lights or headlights the turn signal lights in the cluster light up but the back lights do not. With the lights on the turn signal lights still flash brighter when selected. I have verified that all bulbs and housings are in proper working order and that I have power going to them when the light switch is turned on. I have checked that they all make connection together (daisy chain). The cluster is not installed in the dash yet just plugged.

Does the cluster need to be mounted into the dash to make a ground? If so why do the other lights still illuminate? Are the turn signal lights in the cluster suppose to light up when the headlights are on?
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post #2 of 3 (permalink) Old Nov 28th, 09, 12:32 PM
Senior Tech
Join Date: Sep 2009
Location: Avondale, AZ
Posts: 374
Re: Gauge Cluster Lights

sounds like you are missing the ground for the cluster. It is a wire that goes from the metal chassis/one of the 1/4" I think it is hex screws so that the printed circuit is touching it for grounding, to a hole on the steering column, or kind of by where your knees are if that makes sense.

Add this cluster ground and you should get everything back to normal. Some of the lights/indicators work via ground to get their return path, and some are just flowing current in and out without needing a ground, which is why some work, some don't, and some are getting backfed.
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post #3 of 3 (permalink) Old Nov 28th, 09, 06:55 PM Thread Starter
terrellda's Avatar
Join Date: Apr 2007
Location: Jacksonville, NC
Posts: 26
Re: Gauge Cluster Lights

I verified the grounding strap going from the cluster housing to the high beam indicator lamp to the center top mounting screw on the cluster housing. Everything metered good. Installed cluster in dash and everything works as it should. I guess diagnosing electrical issues can't always be done before putting everything back together.
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