Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

Need Help!! Ac system shorting out

Old May 30, 2014 | 12:02 PM
  #1  
BlackBerlinetta's Avatar
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From: North Florida
Car: 86 Berlinetta
Transmission: 700r4
Need Help!! Ac system shorting out

I was working on the wiring/relays to my Coolant fan and Now I have a short In the ac system. My ac was working properly. There is a connector on the pass side by the Air box that has a Black, Light green, and blue wire, I am assuming the light green and blue go to the low pressure switch on the drier. With the key on and the connector disconnected the black wire is getting power through it on only one side of the connector the part that goes into the firewall. I only swapped relays on the car and I have tried to put it back to the way I had it before but this may be a unrelated problem, I know something is wrong because the coolant fan turns on with key.

If anyone has wiring diagrams for an 84-86 berlinetta that would be the most help, the other wiring diagrams do not match my cars system. 86 berlinetta vin h or g 305 4bbl
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Old May 30, 2014 | 05:08 PM
  #2  
Pocket's Avatar
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From: NC
Car: 91 Trans Am
Re: Need Help!! Ac system shorting out

Sounds like the hvac connector

The blk wire should be 12ga or so. It's ground for the fan motor. Unplug the blower fan relay and see if 12v remains

Leave the fan relay unplugged and run the Ac system. The clutch should still lock/unlock
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