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Old 09-21-2009, 02:45 PM
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Gauge Light Won't Work

Hi, ok so I bought a new bezel covering for my guages on my 1972 c20 chevy and its just the cover nothing else. So when I had the whole assembly out I replaced all of the bulbs I put the besel back in hooked everythring back up then the other night I go to drive it I turn on by lights and the lights don't light up in the gauges but the wierd thing is, is that the fuel works and mph works but nothings else works, the temp, the d c battery, and also the lights in the gauges????

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Old 09-21-2009, 02:47 PM
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You missed something somewhere, You probably have a blown fuse if they were working before. JMO....Cole
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Old 09-21-2009, 03:44 PM
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Old 09-21-2009, 09:08 PM
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Da Fix

The light bulbs on your dash are installed on a plastic printed circuit. One the bulbs you installed is probably not fully seated (either power or ground), causing other bulbs, guages in the circuit not to work.
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Old 09-22-2009, 04:23 PM
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If its like the 73-87 cluster, there is one master instrument cluster ground wire, which is usually attached to the parking brake pedal assembly. If this ground is not connected, all kinds of unusual things happen with gauges and lights.

Bruce
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Old 09-22-2009, 06:19 PM
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Well I checked the fuses and they are all fine so I still don't know what it is????
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Old 09-22-2009, 08:41 PM
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A key point in your problem is that you have multiple electrical items that don't work, not just the items powered by one fuse. Even if every fuse is good, a bad instrument panel ground will cause multiple problems.

Another thing to try is to turn the ignition on, and then turn on one turn signal, or step on the brakes. If there is a ground problem somewhere, it often finds a path to ground through the turn signal switch and/or lights, and all of a sudden something else will start working. For example, you may see an oil pressure gauge needle that oscillates up and down at the same rate as the turn signal.

Bruce
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Old 09-23-2009, 05:56 PM
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It's weird though my turn signal light bulbs work becuase I hanged those to but I will check that out on what you were talking about.
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