C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Help with digital dash

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Old Dec 15, 2006 | 06:15 PM
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From: e.bridgewater ma
Default Help with digital dash

My 87 corvettes digital dash has no lights to see it. Everything works fine on it but it is not lit up enough to really see anything. The left, right and high beam indicators are lit up. According to some things i read on here it says its probably a bad ground......thats were i need the help, could someone please tell me exacly where to look for the grounds for the dash...is it under the drivers panel or up front on the firewall somewhere? I found a ground strap that goes up near the battery but it looked ok. And someone said maybe the connector that goes thru the firewall maybe come loose....couldn't find that .
Heres what i have done, i took out the battery and cleaned the connections at the right of it for the fuseable links, i cleaned the battery terminals , i took off the ground strap and battery ground cleaned them and put them back on. didn't see any wires under the dash broken, took out the digital dash and put it back in figuring the wires might have been loose.....someone please help......even if you have a good electrical diagram that shows where things go.....
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Old Dec 15, 2006 | 08:00 PM
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From: Cincinnati, Oh USA
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The ground for the instrument cluster is a black wire from D1 (pin 1 on the double row connector that has 32 total contacts and this wire goes first to a splice junction in the wiring harness and then to a ground connection behind the instrument panel near the LH side of the steering column. When the turn signal and high beam lamps stay on, this indicates a broken ground on one of the circuit boards in the cluster and the cluster ground current passes through these lamps to ground causing them to stay on. For help on this board ground go to www.batee.com
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Old Dec 15, 2006 | 08:02 PM
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From: Conyers Ga
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Before you "trash the dash" make sure the 4 bulbs in the dash are working. They're number 882 bulbs. Do a search here and you'll find out how to change them......
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