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How to wire a/c compressor #780121 Mon Sep 12 2011 03:09 PM
Joined: Jan 2009
Posts: 159
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bigdog58 Offline OP
Shop Shark
Hi,

I am wondering if someone has a diagram of how to wire the a/c compressor on a 81-87 chevy truck. There is a 2 wire pigtail on the compressor. Where do the 2 wires go?

Thanks in advance

Steve in I-DA-HO

Re: How to wire a/c compressor [Re: bigdog58] #780144 Mon Sep 12 2011 04:32 PM
Joined: Jun 2004
Posts: 8,128
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Wrenchbender Ret. Offline
Master Gabster
There should be a green wire coming out of the harness. It comes from the pressure switch. It hooks to one term on the comp. & the other one (black wire) is grounded.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1956 Chevy 1/2-Ton Pickup

Re: How to wire a/c compressor [Re: Wrenchbender Ret.] #780185 Mon Sep 12 2011 07:40 PM
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Posts: 159
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bigdog58 Offline OP
Shop Shark
some of the wires from harness are gone....so what does the wire go to once under the dash?

Thanks for the help!!

Steve

Re: How to wire a/c compressor [Re: bigdog58] #780211 Mon Sep 12 2011 09:16 PM
Joined: Jun 2004
Posts: 8,128
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Wrenchbender Ret. Offline
Master Gabster
I dont have a scematic handy. I can look it up tomorrow. I believe it originates at the low pressure switch on the side of the accumulator. It is under the hood on the pass side by the evaperator.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1956 Chevy 1/2-Ton Pickup

Re: How to wire a/c compressor [Re: Wrenchbender Ret.] #780257 Tue Sep 13 2011 12:14 AM
Joined: Jan 2009
Posts: 159
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bigdog58 Offline OP
Shop Shark
thanks for the help....

steve

Re: How to wire a/c compressor [Re: bigdog58] #780494 Tue Sep 13 2011 08:55 PM
Joined: Jun 2004
Posts: 8,128
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Wrenchbender Ret. Offline
Master Gabster
The green wire comes off the pressure switch. The other wire (also green) goes to a thermal switch. Theb other wire from it goes to the dash controls.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1956 Chevy 1/2-Ton Pickup


Moderated by  Rusty Rod 

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