ok so i just bought this truck and it seems to me that everything was installed from factory.
The issues i have are that
there is no ac on/off switch on the hvac controls, no big deal ill add a toggle switch.
But none of the wiring is hooked up
i believe that the pressure switch is on the evap instead of the compressor, there is a black lead coming off the ac clutch, goes no where, black lead off of the evap that goes no where but i believe should be hooked up to the ac clutch??
one plug off of the evap, a two wire (green), which is the pressure switch? not connected to anything.
I know that the on off switch gets tapd into the yellow wires off the thermister control.
I guess what im saying is that i have an idea but i am not sure.
If anyone has a diagram of the ac unit, or ant help that would be great.
ps i also dont see any freon in the sight glass on the evap, how can i jump the pressure switch to bypass it, just to see if everything else works. if anyone has any links to retro fit to r134a that would be great too.