Wiring diagram for engine compartment with factory AC - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jerblazer72 · 09-09-2008, 04:48 PM

everyone,
I have a 72 gmc truck and 72 blazer cst. Both with factory air set up. I am putting the engine back into the truck and want to eventually get the ac running. Problem is that the wiring was not hooked up to the AC on either vehicle and I dont know what goes where. If I remember right there was a solonoid on the carb that kicked it up a bit when the ac was on, but I can find no info on this or any other items for the ac wiring. If I do a forum search it dumps the words air, conditioning, and ac as being too common or long. Can someone/anyone please point me in the right direction?
I have looked at the color wiring diagram in the sticky section under electrical but there is no ac shown. Thanks in advance for any help.

JimKshortstep4x4 · 09-09-2008, 07:20 PM

Here is an AC wiring diagram. It does not have the carb solenoid wiring that you are asking about. I have only seen trucks with a solenoid as part of the TCS setup and I don't have any wiring information on what you are asking for on it. Maybe someone else has the info on the solenoid like you are thinking of.

Jim

haysonj · 09-09-2008, 08:43 PM

Not sure where I saw it maybe LMC but any auto parts place will sell the solinoid but no bracket. The solinoid hooks to the wire on the compressor so it will operate when compressor is on

09-09-2008, 04:48 PM	#1
Jerblazer72 Registered User Join Date: Aug 2007 Location: Kaysville, Utah Posts: 119	Wiring diagram for engine compartment with factory AC NEEDED! everyone, I have a 72 gmc truck and 72 blazer cst. Both with factory air set up. I am putting the engine back into the truck and want to eventually get the ac running. Problem is that the wiring was not hooked up to the AC on either vehicle and I dont know what goes where. If I remember right there was a solonoid on the carb that kicked it up a bit when the ac was on, but I can find no info on this or any other items for the ac wiring. If I do a forum search it dumps the words air, conditioning, and ac as being too common or long. Can someone/anyone please point me in the right direction? I have looked at the color wiring diagram in the sticky section under electrical but there is no ac shown. Thanks in advance for any help. Last edited by Jerblazer72; 09-09-2008 at 06:08 PM. Reason: To clarify the title

09-09-2008, 07:20 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Wiring diagram for engine compartment with factory AC Here is an AC wiring diagram. It does not have the carb solenoid wiring that you are asking about. I have only seen trucks with a solenoid as part of the TCS setup and I don't have any wiring information on what you are asking for on it. Maybe someone else has the info on the solenoid like you are thinking of. Jim Attached Images __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

09-09-2008, 08:43 PM	#3
haysonj Registered User Join Date: Dec 2007 Location: Santa Maria, Ca. Posts: 1,423	Re: Wiring diagram for engine compartment with factory AC Not sure where I saw it maybe LMC but any auto parts place will sell the solinoid but no bracket. The solinoid hooks to the wire on the compressor so it will operate when compressor is on __________________ 69 Chevy 4x4 383 Power



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