It's possible that it measured all avaliable paths but it appears that the solid state device resistance is high enough that between A&C is 17K ohms (variable) and across A&B and C&B is 400kohms. To truly isolate it yeah, would have to cut then since they're hardwired. I have power supplies at work, if I don't get one I'll test it when I go back.

 

I finally got around to it and finished this factory AC install on the 1994 1LE that didn't have factory AC. It's currently cooling to 45°F - 48°F at the vents while driving on the highway. At 60% humidity it's approximately 35psi on the low side and 260psi on the high side. All the wiring and splicing into various systems was interesting and helped me learn the form, fit, and function of the system.

I went from no AC, 1 big cooling fan, 1 cooling fan relay, to 2 smaller cooling fans, 3 fan relays, and an AC Clutch relay. Then of course the pressure sensor, evaporator temperature sensor install (stabbed into the fins and epoxied to them right in the center of the core per FSM location). It's great to have a cool cabin (no tinted windows yet) driving down the road for the first time in 28 years.

I have a question about SCAN9495 that I may have missed: Does the "AC Clutch" circuit ever show green and go from (0) to (1) like the status and command sections? I was wondering if I missed a splice or something, because I have S105 done. I also need to dig in a little closer to the vacuum system and make sure all the inlets/outlets are working properly, hopefully no duct leaks as well.

Never too late lol

 

Let’s try @GaryDoug