C4 General Discussion General C4 Corvette Discussion not covered in Tech

need help

Old Jan 31, 2012 | 01:32 AM
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I got a 1986 vette but my instrument cluster lights don't work the rest of the lights work fine I got the turn signal lights on and also the high beam any body got a clue thanks
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Old Jan 31, 2012 | 03:42 AM
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Originally Posted by jj electric
I got a 1986 vette but my instrument cluster lights don't work the rest of the lights work fine I got the turn signal lights on and also the high beam any body got a clue thanks
it seems like you might have a loose connection. Hopefully that's the only problem though, sometimes with higher mileage vettes the instrument cluster will just burn itself out. I'd check the fuses and make sure there aren't any loose connections behind the dash before looking into replacing or repairing the cluster. Because there are so many moving numbers and cool flashing lights, the speed and tach run on a different circuit. thats why you can get the other lights to work but not the really important ones.

here's a link that might help.

http://forums.corvetteforum.com/c4-g...ent-guide.html

Good Luck!
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Old Jan 31, 2012 | 09:42 AM
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Thanks Corvette sonntag ill check on that hope its just a loose connection I'll post back how it went
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Old Jan 31, 2012 | 10:03 AM
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Dash back lighting is a totally different circuit than LCDs and the inputs to them. Go to batee.com for a lot more info and search here more. I had a bad connector between the PC boards causing my troubles.
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Old Jan 31, 2012 | 11:29 AM
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Originally Posted by jj electric
I got a 1986 vette but my instrument cluster lights don't work the rest of the lights work fine I got the turn signal lights on and also the high beam any body got a clue thanks
It could be something as simple as burned out backlighting bulbs. Check it out....
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Old Jan 31, 2012 | 04:39 PM
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I had a bad connector between the PC boards causing my troubles.
Same with my '88 dash. Did some work on the connector but now it occasionally "winks out" till I rap on the front of the display bezel...

The info on batee.com was very useful; pay attention to the cautions regarding the display glass plates.
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Old Feb 1, 2012 | 02:02 AM
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Follow that link from CorvetteSonntag. Take off the bezel as shown in the first pic. After that's off, you should be able to see light coming out around the 4 round silver light shield/reflectors when the ignition is on. That will tell you if your backlighting is working or if one or more lamps are out. You can see light leaking out around these guys in the third picture from the bottom of the series.
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Old Feb 1, 2012 | 04:05 AM
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Originally Posted by Cliff Harris
Follow that link from CorvetteSonntag. Take off the bezel as shown in the first pic. After that's off, you should be able to see light coming out around the 4 round silver light shield/reflectors when the ignition is on. That will tell you if your backlighting is working or if one or more lamps are out. You can see light leaking out around these guys in the third picture from the bottom of the series.
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Old Feb 3, 2012 | 10:46 AM
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I wanta thank all of u guys for the tips on fixing my cluster and thank u 65Z01 went to barrel.com did everything they said there and found my problem had to bypass the circuit board ground and my cluster came back to life thanks again for the great info.
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Old Feb 3, 2012 | 10:47 AM
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Barrel.com sorry for the mispell
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Old Feb 3, 2012 | 10:48 AM
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Batee.com
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