So there are 3 green wires that I can see in the harness where Im supposed to tap for AC. Does anyone know which is the actual wire I need to tap? Im using LS1 fans with the blackbear harness for my 2000.

 

I forget which one is it, green 33? im assuming you have the instructions?? Either way just follow the wires to the base where they all go in the main connectors and they numbered really small by each wire.. Just make sure you have the right harness connector, one is blue and one is green..
or are you trying to tap into it by the compressor or something?

 

No instructions came with the harness. Everything is hooked up but I'm hooked into a green, key on power, wire in the harness that runs right next to the auxiliary power box. So right now just one fan runs on high constantly. Its supposed to be the A/C relay wire I think?

 

Install Instructions

 

Thanks a lot man! That's exactly what I need.

 

I also bought my harness from them about a year ago and so far no issues.
Wires still look good and solid.

 

Yea I think blackbear must get their harnesses from that site. Looks exactly the same. Ive had everything hooked up as is for over a year now and even towed a car 3 hours each way this year. Even with just one fan on high constantly I never had cooling problems. Just finally getting around to fixing the problem while the truck is down.

 

I knew i was right, you just didnt want to listen to me...

 

Nope, you're still wrong!

The blue 42 wire is pinned correctly. Its the green A/C wire that I have tapped into wrong. I must be on some kind of key on, power wire right now. I need to tap into whatever wire that comes off the compressor to trigger the fans to come on when the A/C does.

I was just hoping there was a definitive answer as to the exact wire I need to tap. But I guess I have to test each green wire with the truck and AC on for voltage.

 

the green wire coming off the compressor will work