Need help with OEM Fan wiring harness
 

I have a complete oem set up the fans,rad,and wiring harness from a 06 silverado I really need help on how to wire everything. There a black wire that looks cut but don't know if it got cut accidentally or ground clamps got cut off.
https://cimg6.ibsrv.net/gimg/www.per...7560a8362f.jpg

There is a small plug idk if that is were u get the trigger wires from or the ones that go to the pcm. And if not how could i wire it so i can control it of wen to come on and off. Any help. Preciated

I moved your post to a more appropriate section. See diaghram below.



https://cimg5.ibsrv.net/gimg/www.per...336510569a.gif

That small plug should be the one the wires from the pcm tie into, that black wire looks like the ground!!!

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The green and blue wire coming off the relay box are supposed to go to a 2wire connectorbthe other side of which goes to the pcm....c100 in the diagram brick posted

So 2xLS1 it looks like my black wire needs to be tied off together and be joined by a separate ground wire. Because mine onay has one black wire coming from the relays towards the plug. Yours has the same one then one with a ground clamp. I'm installing all this on a 99-00 silverado.
https://cimg9.ibsrv.net/gimg/www.per...8961cb1aef.jpg

As u can see my black wire is cut. And does anyone know which pins do the the green and blue wire go to. If im installing on a 99. Cuz i know one is used pins 42,33.thanks alot guys

Both to the same pins they came out of you lose the auto recirc feature for the ac, i havent noticed any difference other than when i turn the a/c off i dont have air coming in anymore... Always irritated me....

I'm swapping an 06 harness into my 03. I already have electric fans in the truck. I assume these are the two plugs down by the pcm connectors that my stock harness didn't have? If so I will just get a factory fan harness and be done.

03up are literally plug tune and play...after you run the harness and connect everything of course....

So both the green and blue wire go into the same pin? And which pin#?

Refer to diagram above.... c1 pin 42 green wire, c2 pin 33 blue wire

Iirc your auto recirc will cureently be connected to pin 33 on connector 2 remove the wire and insert the fan wire and let your tuner know you did so....

The green wire will always go to the blue connector 42 and the blue wire will go to the red (99-02) or green (03-07 classic) connector 33. In the pic I posted the wires were cut before the factory 2 wire connector between them and the pcm. I just extended those wires with enough length to reach the pcm connectors and added female pcm terminals on them.

There was a how to i had seen somewhere that tapped into the ac clutch at the fuse box and ran another relay but just seemed like a lot of extra crap, especially when youre adding another point for a failure and drawing current from the compressor clutch circuit...

So I think I got this down green gets put in pin 42 in the (blue plug) the blue wire gets put in pin 33 in the (red plug). Never heard ofrom anyone tapping in to the red plug but if it works
https://cimg3.ibsrv.net/gimg/www.per...cfb076661d.jpg

As shown green wire pin 42 in blue plug<br/>Blue wire in pin 33 in red plug. <br/>And were i got purple are those two black wires supposed to be met up wit another wire to be grounded off?


https://cimg3.ibsrv.net/gimg/www.per...90e013b368.jpg

Like the way urs is 2xLS1. That the only one i havent got to yet? Thanks alot for ur info

The red and green or blue plugs are the pcm connectors yours should be red and blue

Wish i had taken better pics when i did mine now....

I know bout the plugs I'm asking about the black wire I'm trying to see if his is tied up like I said with the purple paint I used. Do u have any pics at all

Yes the two black wires are ground... I cant find the ones i have but if it ever stops f'n raining i can get some....

what would i need to make the 08 oem fans work on a 2000 ?

The 08 fans are same as the nbs just need harness and reprogram

I have a clutch fan trying to make it to electric doe . Won't I need a bigger radiator ?

Depends which radiator you have now... If you look at your radiator mounts is there an extra set of bolt holes to the outside or the inside of where yours is mounted... You need the 34" radiator which will mount to the two outside holes in the core support

Yeah I have the smaller one . Would I just need to buy a bigger radiator? And will everything bolt up right

Yes it will