My fan harness

[ff_jeff]

I know Jason said he would help me but Im was wanting to do it now, but he is indisposed. Here is my harness


Now the pigtail side is to the fans and there is a double neg tied together.
There is a blue wire in the center, Dont know were it goes, and a thin black wire at the bottom center of the pic, Dunno either. The Wire on the left is a double positive from the relays.

[MidwestSS]

ill bet you the black goes to the pcm, and the blue goes to the AC on..
look in the wire loom i mentioned for the green wire and tap into it using a vampire tap. its what i did

[GasGuzzler]

The AC hot on wire is usually green (it's green on the truck and in a Nelson harness). The blue one goes to the PCM for ECT control of low speed (on the OEM 05-06 and Nelson harness). The PCM grounds it for low speed.

[ff_jeff]

The AC hot on wire is usually green (it's green on the truck and in a Nelson harness). The blue one goes to the PCM for ECT control of low speed (on the OEM 05-06 and Nelson harness). The PCM grounds it for low speed.

I got Jason to help me. Blue is ignition, black is pcm. works great. Thanx though.

[GasGuzzler]

Cool. Obviously I was concerned about color since it was built by someone else.