Help with A/C wiring in '88 ranger

[tydonley]

Hi everyone, I have a 1988 manual 2.3L ranger that I've been keeping up and it works great to be considered a daily driver at this point. I have had trouble getting the A/C compressor clutch to engage however. I have a new compressor, evaporator, sensor, and relays, but it's still not engaging by itself. The clutch will engage when I test so obviously there's a break in continuity or I'm missing a wire. I tried looking for some wiring diagrams but I can't find anything that really helps me figuring out what wire I should be looking at to go to the AC compressor clutch. Any help would be appreciated thanks.

 

[Terrys87]

On my 88 the wire goes from the compressor to the pressure switch on the dryer, then somewhere done by passenger frame.

 

[tydonley]

Thank you this helped a lot. I figured out power isn’t the issue but my pressure switch isn’t closing. Tried a brand new switch but still not closing. Wondering if I have a clogged system of if I should change my evaporator

 

[Terrys87]

If you have any blackish oil coming out of your system, as I understand some of the plastic/rubber from the compressor has broken down and contaminated the system. Really no way of flushing condenser and evaporator as lines are so small.

These trucks do not have a safety clip on the High side of the hose that connects to the Condenser. Mine blew off last weekend. I am going to get it from the shop tonight. I found a safety clip from a F150 that helps lock the hose and condeser together. Same idea as what is on hour Fuel Pressure Regulator. I would suggest you finding one of those for yours. If you want to see what I am talking about, I have it shown in my 88 Ranger build. I dont know how to post pictures from my build to this post.