Help ac swap needs input

[ibad57]

I installed a heat-ac unit from Limo between my front seats 72 c10 it has a block valve for refrigerant up front is r4 compressor with dryer and a dual switch pressure sensor for coolant my question is normally this system had two evaporaters up front and the rear im using do I need to make changes for not having front unit running? thought it might need sensor to shut off compressor if it becomes to cold

[ibad57]

this mis the switch to regulate compressor

[ibad57]

this is the unit with valve and air diverter

[ibad57]

the compressor

[ibad57]

I know the trinary opens the compressor circuit to prevent low or over pressure just not shure on other wireing needed to make this work !

[MARKDTN]

Hard to tell exactly what you need. So this is basically like a rear air unit in a Tahoe/Suburban? It has no controls of it's own? Yes, you will need some way to control the system. A stock 67-72 system has a POA valve that regulates refrigerant flow and the compressor runs constantly. Later trucks have a cycling system with an accumulator and the compressor runs on demand. It sounds like you could use a cycling switch in the line between the evaporator and compressor, but I don't know exactly how the block valve works.

[demian5]

Wow, Why?