Im trying to fix the butchering the PO done to my car. When I bought it most of the harness had been hacked. It wont be long before the heat gets here so I want to get the A/C fixed.

Background: 88 Camaro, factory v6 car. A/C system was installed off a 90 RS (305 TBI) car.

The factory harness from the car still had the connector for the pressure switch on the accumulator. It has a green and blue wire. They both disappear into the harness.

From what I can tell, that is all I have. My HVAC controls all seem to work correctly. I have all of the connectors for the rest of the system.

There are 3 connectors I need to wire in somehow.
1. I have the clutch connector. I know black goes to ground and green will go to the high pressure switch. But what switch is the high pressure?

2. There is a connector on the back of the compressor. Has a black/white stripe wire and a blue wire. I have no idea where this goes or what it does.

3. There is a connector on a pressure switch in the small line. Im assuming this is the high pressure? It has a blue wire and a black wire.

I'll try to upload a pic later on.

Thanks guys.

Brad

 

Here's all wiring diags - maybe it helps: http://www.austinthirdgen.org/index.php?pid=19

If you scroll down, you'll see additional diags for 1992 Camaro stuff - alot of stuff - that should all apply to the 1990 A/C stuff, and should also apply to most anything in 1988.

 

Thanks but I have the diagrams. My problem though is my ignorance to what the connectors are. The diagrams only mention a single high pressure switch for a 90 RS. So which one do I use? Or do I use them both?

Here is a pic.

Are both of these high pressure switches? (I know the clutch connector)

 

Found it through some help on CamaroZ28.com

lower connector is to turn the secondary fan on above 233 psi

connector on the compressor is the high pressure cut out