Re: Battery Gound?

Absolutely NOT!! That isn't a ground wire. It's a positive feed to something in the vehicle. The battery ground goes directly from the NEGATIVE terminal to the vehicle chassis. Sometimes these get loose and/or corroded. Check both ends. I had that problem in my '93 JGC.

Dick

Woah now, hook that wire to ground and you will likely explode your battery or at least have some wicked pyrotechnics going on!

The battery negative either goes to the fender and/or the engine block. If it only goes to the engine block, then the engine has a mesh strap from the back of the head to the firewall. This mesh strap likes to rot or get corroded ends on it. This is the gauge ground.

The fuel sender ground is a mesh strap that goes across one of the engine mounts from the engine to the frame and is about 1" wide.

Mike

William Oliveri wrote:

That is a sticky mechanical voltage regulator inside the gas gauge. The gas and temp run on 5 volts.

When the points stick in the regulator, you get a 12 volt spike. This 'will' burn out the gauges in short order.

Here is a good link on troubleshooting the gauges:

William Oliveri wrote: