wiring issues

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Jtobe81

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1981 Chevrolet
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some weird stuff going on, was having fuel gauge problems where it was reading past full 3 o'clock, i fifgured out the wiring on that. I t will read correct when no headlights are on, now when i turn the headlights on it goes to the 9 o clock position. why would the headlight's do anything to the fuel gauge?

also the flashers work but can not get the turn signals to work left or right. I replace the turn signal switch in the steering column no luck there.

not a daily driver a project truck. maybe wiring harness needs be replaced completely but it looks fairly new.
 

Tonimus

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Sounds like grounding issues. Stray voltages do all manner of weird things.

The flashers and turn signals are separate circuits. Check your signals at both sides of the the comb connector in the steering wheel.
 

Jtobe81

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1981 Chevrolet
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c-10
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350
flashers are good. some funky wiring going on, the previous owner rigged the ignition where the key is only to unlock the steering wheel. ignition switch is mounted to column. also wired a kill switch. guess will have to let the pros take a look at what's going on.

Any responses appreciated!
 

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Tom Weeks

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Susanville ca
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some weird stuff going on, was having fuel gauge problems where it was reading past full 3 o'clock, i fifgured out the wiring on that. I t will read correct when no headlights are on, now when i turn the headlights on it goes to the 9 o clock position. why would the headlight's do anything to the fuel gauge?

also the flashers work but can not get the turn signals to work left or right. I replace the turn signal switch in the steering column no luck there.

not a daily driver a project truck. maybe wiring harness needs be replaced completely but it looks fairly new.
Sounds like a bad or lose ground wire between the battery ground and the core support small 10ga wire.
 

fast 99

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That looks horrible, I think a dash harness is available. If not how about a salvage yard? Probably would be better off pulling it all out and starting over rather than chasing various electrical issues.
 

Jtobe81

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las vegas
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Justin
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1981 Chevrolet
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c-10
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350
yeah I don't know what the idea was with that. The wiring actually doesn't look to bad might be fairly new. yeah what a pain trying to chase down wiring!
 

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