I am swapping a LQ4 into my 89 K2500. Im using a modified stock harness per LT1swap directions, and my own fuse/relay panel. I swapped an LS into my Porsche 944 last year so I have a good grasp on the swap and the wiring, but I have never messed with A/C. It’s always something I have ripped out and tossed in the garbage. Well for this one I want to keep the A/C. I’ve looked through the factory 89, and the 02 diagrams, but the terminology isn’t the same exactly.
I hate to ask, but could anyone help me out and “hold my hand” on the wiring. From what I understand, the climate control will have 2 wires coming out, one going to the high psi cutout switch, which goes to the PCM. The other will go to the recirc door motor “blend door?” Which has a wire that goes to the PCM also. The PCM grounds the A/C relay. There will be 2 wires coming from the PCM, one to the auto recirc switch, and one to the compressor low psi switch.
I’m sure this isn’t super complicated, I’m just A/C stupid. Any help would be greatly appreciated!
I hate to ask, but could anyone help me out and “hold my hand” on the wiring. From what I understand, the climate control will have 2 wires coming out, one going to the high psi cutout switch, which goes to the PCM. The other will go to the recirc door motor “blend door?” Which has a wire that goes to the PCM also. The PCM grounds the A/C relay. There will be 2 wires coming from the PCM, one to the auto recirc switch, and one to the compressor low psi switch.
I’m sure this isn’t super complicated, I’m just A/C stupid. Any help would be greatly appreciated!