A/C Switch

[Read]

I recently purchased 85 c10 and there is a toggle switch below the driver side dash that was added. I followed the wires and they run to a/c compressor and wiring to evap case. Any idea why this was added? Possibly an a/c switch went bad. I flip switch with fan running and a/c compressor kicks on.

I assume that I have to toggle switch off if I want to run the heat??

 

[1987 GMC Jimmy]

It sounds like a crappy way to bypass the low pressure cutout switch.

 

[yevgenievich]

Might be just stock controls failed. Essentially same if it is running through the low pressure switch

 

[75gmck25]

The other possibility is some type of bypass or manual on switch for the A/C compressor on/off. The compressor comes on in Defrost, A/C and usually a couple other positions whenever the fan is on. If they wanted manual control of the A/C they may have added a switch. For example, sometimes folks don't want the A/C on when its defrost.

Bruce

 

[Read]

Anything I should be concerned with? Is it ok to leave as is?

 

[Crispy]

I wouldn't be worried unless you want it to operate like stock. Just check for a sturdy connection.

 

[Snoots]

When you want to romp on it but not have to go thru the whole a/c control thing. Kill the compressor.