Dash air

[1993fred]

I bought a 93 Seabreeze built on a Chevy 15 passenger van chassis. On the dash air on the dryer there are 4 electrical connections. 2 have been taken off and a fuse wired in between. I think they are bypassing the low pressure switch. How can I get a wiring diagram to put the wiring back original. I have changed the compressor and dryer. Thanks

 

[Kirk]

Contact Chevrolet for information.

 

[Skookum]

It looks like an aftermarket switch, and it looks like the factory connector for it has been lopped off and crimp connectors were added after the fact. Most the ones I've seen are two wires, green and black, which go to a factory plastic connector that plugs into the switch. The switch is either open or closed.

Without knowing what's been done or what refrigerant the system might have, you could be in for trouble. Using Google, you can find factory wiring diagrams for these van/chassis, but as they say, only a trained mechanic should work on AC systems

 

[Ray-IN]

The first thing to determine is the brand of the A/C system. It will either be Denso, Evans Tempcon, or Victory. Evans Tempcon filed bankruptcy last Dec. but parts are still available elsewhere. (website down)
This is a standard HD air conditioning system service manual.
Once you identify the brand, I have the service manuals for them too.

 

[Skookum]

@Ray-IN Wouldn’t a ‘93 GM G-Series cutaway chassis use a Harrison H6/HR6 compressor from the factory? Or am I confused and thinking of other GM models?

 

[Ray-IN]

@Ray-IN Wouldn’t a ‘93 GM G-Series cutaway chassis use a Harrison H6/HR6 compressor from the factory? Or am I confused and thinking of other GM models?

Quite possible; good catch.

 

[dktool]

Yes, it would be gm hardware.