Temperature gauge linked to headlights

[joelittel]

Tonight I discovered that my temperature gauge is somehow connected to my headlights. When I turn the headlights on the temperature gauge jumps up by 15-20%. When I turn the headlights off the temperature goes back down to normal.

I'm not looking forward to figuring this one out.

[spider2081]

I had a similar problem. I cleaned the instrument ground terminal on the grounding pod above and behind the ignition switch. That pretty much cured my problem.

[So Cal Mark]

yep, that's a bad ground

[joelittel]

That doesn't sound too difficult to fine.

Thanks guys, that gives me hope.