Wiring nightmare!

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Nick Prater

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May 14, 2019
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Location
Oswego il
First Name
Nick
Truck Year
1979
Truck Model
K10
Engine Size
350
So I recently purchased a 1979 chevy k10. It has a 90s gmc automatic steering column in it but truck is manual. Here are some of my issues. The turn signals don’t work. The right signal on dash turns on when i push the brakes. Doesn’t blink, just illuminates. When I hit the brakes the marker lights come on as well. The truck has a mid 80s front clip. The dash lights will only come on if the switch is in just the right spot. Can anyone please help me figure this out? Even if I can just get a new harness somewhere?
 

1985c20

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Torrington, CT
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Chuck
Truck Year
1985
Truck Model
C20
Engine Size
350
You've got a host of problems. I would start with checking/cleaning all grounds and bulb sockets. I know any time I've had the turn signal indicator lights light up in the dash on cars I've owned its always been a bad ground.
 

yevgenievich

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Behind left side of cluster, near top of parking brake, battery to core support, engine to firewall, frame to engine
 

Matt69olds

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Matt
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81
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GMC 1/2 ton
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455 Olds
Make sure all the bulbs are the correct ones. If someone shoved a single filament bulb where a dual filament should be it can cause the turn signal indicator to light with the park lamps on. Push and pull the hazard switch a couple times, sometimes that can correct funky turn signal issues. Get a wiring diagram for both the 79 and whatever year the front clip is. Make sure the bulkhead connector pinout location is the same. Good luck, I hate trying to fix other people’s “repairs”
 
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