Question about 1989 Jeep Wrangler
Suggest that it is a bad ground.
Your instrument dash is made of plastic. There is a large plastic strip on the backside of it, that contains Thin, Very, small copper strips. These copper strips conduct electricity to the gauges, and also a ground source.
There is a flat cable, or wire, (Or more than one), that connects from that plastic strip, to the metal body of your Jeep. This is the ground source to that plastic strip. If it has a loose connection, (loose bolt), corrosion, or rust at the connection to the body, or is broken, you will have lost your instrument panel's ground.
Also there should be 2 flat braided cables leading from the firewall, (Hood open. Under the windshield), to the engine. These need to be connected, and there should be 2 of them, not 1.
Posted on Aug 02, 2009
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Posted on Jan 02, 2017
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