I have an 03 Chevy 1500 HD and I ordered the harness for the LS1 fans on my truck. I hope it cools well enough, anyway I got the harness and no instructions on where to mount the relays where to connect the ends or anything. Any help would be nice, I search the site but didn't see anything that stated how exactly to connect the fans. I have had the Efans turned on in the ECU and the TB should be back tomorrow so I would like to have these installed by tomorrow. Thanks guys, maybe a how to should be made a stickie that would be awesome since this is a popular mod.

 

here ya go buddy...
http://www.nelsonperformance.com/HarnessInstall.htm

I just did mine friday...works great!

 

I am such a dummy thanks man!!

 

no prob...

 

I took the clutch fan off last night and the fan shroud and everything. Does the water pump need a nut on it to keep the pulley on or is it held on without one? I pulled on the pulley seeing if I could budge it and couldn't, but I just wanted to make sure.

 

nope...you just take off the fan and she's good to go...looks a lot better w/o the shroud and fan in there huh!

 

haha, I did the same thing, posted on here and then someone gave me the link.

 

It looks a lot better with all that BS out of the way.

 

can you take some pictures of the harness before you install it? Im getting my ls1 fans ready to go in but damn $100 for the harness seems high. I know i can make it just need a detailed picture or wiring diagram. thanks man. and lets see some pictures of the engine bay before and after.