Question about 1986 Chevrolet Corvette

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1986 corvette electrical problems.

It seems my car has 2 electrical states. If the heater, radio,interior lights work, then the dimmer, dash lights, vaniity light, fog lights dont work.

The reverse is also true, thing is I can be in either state for months but at no time do they all work!

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Since you have power in both states its obvious that you have a ground wire problem this is very common on vettes due to fiberglass body your gonna have to take dash pad out and trace down both grounds on these 2 areas till you find the loose or broken wires theres a huge amount of ground wires from those locations on a block between the battery and firewall under the hood use a volt meter make sure you have it grounded and search the circuits 1 at a time ..i also have an 86 vette and have had similar problems if your not a good electrician youl just be pulling your hair out,, another way is,, if you cant beat em join em ,, try pulling a new wire to the effected circuits from a ground point on the fire wall make sure battery is grounded properly reattach any broken or loose ground straps you find around engine compartment these are braided bare wires going from engine to frame and from battery to fire wall etc hope this helps you im lucky i have some electrical knowledge because it can be frustrating

Posted on Mar 19, 2009

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0900c152800b1fa5.jpg enlarge_icon.gifenlarge_tooltip.gif Fig. Fig. 4: Unfasten the fog lamp electrical connector
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