the ECU harness does not power the compressor directly, and you don't want to do it that way. the wiring will not handle it.
If you put a jumper from pin 1 to 8, and turn on the ignition, that will energize the compressor relay and run the comrpessor. you can also pull the relay (#20 in the engine bay fuse box) and jumper pin 1 to 5 to bypass the relay. use 10 or 12 gage wire, you'll melt anything smaller.
If you put a jumper from pin 1 to 8, and turn on the ignition, that will energize the compressor relay and run the comrpessor. you can also pull the relay (#20 in the engine bay fuse box) and jumper pin 1 to 5 to bypass the relay. use 10 or 12 gage wire, you'll melt anything smaller.