Help with gauges - Team Camaro Tech
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post #1 of 9 (permalink) Old Jan 23rd, 10, 04:06 PM Thread Starter
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andrew
 
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Help with gauges

Sorry if this is in the wrong location. I just joined this site. I recently bought a 1968 350ss. There were a few electrical issues with the car when i bought it which i have been slowly dealing with.
I just removed my dash gauges and noticed that the plug that fits into the speedo had a few pins missing. This could account for some of my problems. My question is, can I replace/repair the pins or can I buy a new plug to splice in? My internet search so far for a plug has not turned up anything.
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post #2 of 9 (permalink) Old Jan 23rd, 10, 04:13 PM
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Re: help with gauges

as long as the "missing" contacts in the plug align with the copper contacts on the "printed circuit" attached to the rear of your gauge cluster you may be correct. If all that is correct AAW would be the place to check to get a new plug.
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post #3 of 9 (permalink) Old Jan 23rd, 10, 04:20 PM Thread Starter
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andrew
 
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Re: help with gauges

Thanks for the advice. Hopefully they can sell me just the connector, and not the whole wiring harness.
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post #4 of 9 (permalink) Old Jan 23rd, 10, 08:21 PM
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Boo
 
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Re: help with gauges

Like previously stated, make sure all of the copper connections on the PCB match up with wires. If there is discrepancies then you'll need to find out what's missing.

Without knowing more about what's actually not working, I would venture to guess your issues aren't missing connections, but flawed ground connections.

If you do some searches on your specific problems, you'll find ground issues can cause lots of electrical fails.

Good luck and welcome.

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post #5 of 9 (permalink) Old Jan 24th, 10, 07:47 AM Thread Starter
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andrew
 
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Re: help with gauges

I think you are right. Grounding issues are probably causing most of the problems I am experiencing. In my search for where I am grounding, I incidentally noticed the cluster connection looked pretty rough with several wires not connected to the pins. I figured while I was back there I would just replace the plug.
The problems I have noted like you stated are most likely from grounding....I think. For example, gauge lights come on when brake pedal is depressed. Flashers don't flash when headlights are on, they just stay on. I am replacing the brake light switch and turn signal switch as well as running the wires looking for grounding issues. I'd rather not replace the entire harness if I don't have to as it otherwise appears to be in pretty good condition.
Any other thoughts/suggestions?
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post #6 of 9 (permalink) Old Jan 24th, 10, 11:55 AM
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Re: help with gauges

Andrew, sounds like you're on the right track. As Boo stated, check the contacts on the printed circuit. I've seen the contacts accumulate dust and even paint residue, if it's been repainted, causing similar problems.
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post #7 of 9 (permalink) Old Jan 24th, 10, 11:59 AM
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Re: help with gauges

A common problem with dash gauges is the ground point at the top center of the cluster. It's easy to forget the little metal piece that grounds to the top center dash screw. Also seems like you can assemble it incorrectly and have a grounding problem.

I'm not aware of anyone posting a picture of it, but if you search you may find some helpful posts. A lot of guys have just grounded their instrument panel with a separate ground wire to the dash or pedal bracket to avoid the headache with the factory ground.

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post #8 of 9 (permalink) Old Jan 24th, 10, 05:42 PM
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Re: help with gauges

Flashers don't flash when headlights are on, they just stay on.

No doubt a grounding problem. Just had the same problem and it was a bad ground. I got tired of foolin' with that center screw in the instrument panel and simply ran a separate ground wire from the metal instrument case to a ground screw in the dash. Problem solved.
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post #9 of 9 (permalink) Old Jan 25th, 10, 12:58 PM
 
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Re: Help with gauges

hi guys,

i have a similar problem with my tic toc tach. i have installed a complete conversion kit from fuel gauge to tic toc tach.
i replaced the circuit print aswell, but now the clock is not running. who can tell me wich connection is the grounding, and wich is the positive (+) for the clock. the third is the singnal from coil.

thxs alots
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