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1980 Chevy Truck Dash goes wacky when I turn on headlights

Tiny
SPLATTGRAPHICS
  • MEMBER
  • 1980 CHEVROLET TRUCK
  • V8
  • 2WD
  • MANUAL
  • 90,000 MILES
When I turn on the lighs, the amps drop to 0, the temp pegs all the way, gas guaage quits, there's no gauge lighting, the turn indicators both glow dim & steady and theres' no wipers. The rest of the truck seems unharmed. With headlights off, everything's normal, and yet a new headlight switch didn't remedy it.
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Sunday, September 13th, 2009 AT 12:14 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Yep, sounds like you have lost the ground. You should make sure all of the these grounds are connected and clean. The battery to body ground, engine to body ground, usually off of back of engine or valve cover to firewall/front of dash. Make sure dash is grounded as well. I'd bet the body ground is not connected.
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Tuesday, September 22nd, 2009 AT 12:33 PM

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