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Explorer AC Compressor to Vintage Air help!

71 CA Bronco

Sr. Member
Joined
Nov 25, 2015
Messages
732
Hey Guys,
I'm needing help wiring a Vintage Air, EFI Guy 1996 Explorer harness to stock Explorer compressor.

Gary's harness shows a Dark Green/Black stripe wire labeled "Power for A/C system, Hot anytime A/C or High Idle. I'm not sure what this wire is intended for or where to connect it?

The explorer compressor has two wires coming off it:

Solid Black
Black with yellow stripe

I imagine one is hot (so goes to binary switch) and the other is ground (chassis). I need to know which is which?

Any help here is greatly appreciated.
 

surfer-b

Contributor
Bronco Guru
Joined
Sep 7, 2006
Messages
2,939
1:solid blk is grnd
2:need a wire from the AC evap unit "switch on" to one of the pressure switch terminals,
3:On the other pressure switch terminal connect the blk/yel along with the grn/blk stripe,
when the Ac unit is turned on it will go through the pressure switch, engage the compressor clutch and also raise the idle
 
OP
OP
71 CA Bronco

71 CA Bronco

Sr. Member
Joined
Nov 25, 2015
Messages
732
Makes sense now. Thank you I appreciate the help.

I had Garry's green/black wire going to one side of the binary switch and the other to the AC switch. I imagine it would have just sent power to the CPU to bump the idle. I never turned it on but noticed the wires coming from the compressor were never hooked up so knew something was wrong with my wiring logic. Those AC compressor wires went to a plug and were tucked under my battery tray. Out of site out of mind.

The good thing is I won't need to tear my condenser unit back out from behind the dash. Both wires are already run to the core support.
 

gilmakil

New Member
Joined
Jun 23, 2021
Messages
2
1:solid blk is grnd
2:need a wire from the AC evap unit "switch on" to one of the pressure switch terminals,
3:On the other pressure switch terminal connect the blk/yel along with the grn/blk stripe,
when the Ac unit is turned on it will go through the pressure switch, engage the compressor clutch and also raise the idle

Thanks from me, too. I finally found the right and clear solution. Very rarely come across good advice about air conditioners. Of course, there are problems that you should not solve yourself, but you don't want to call the masters when you need to clean the filters, pour freon, or eliminate a gas leak at all. You need to be able to do something yourself. As a last resort, I have a service that I will turn to, it is marvellous.sg. It's a pity that I didn't know about them earlier. They will not only provide services but also give advice and recommendations.
 
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