Hi I am new on this forum and I am looking for some wiring help I am installing a flex-a-lite fan kits on my 03 sierra 1/2ton and I need to find a keyed power wire and I also need to know which wire I splice into for the AC any help is appreciated

 

As far as the keyed power wire goes, I don't know because I used a Nelson Harness that attached to the red plastic box next to the #1 cylinder...

But the other wire is in the little loom thet runs under your engine cover. I'll look at the wire and tell you what I used when I get home to look at my truck.

 

Green wire.