So i have an 02 2500hd, i bought stock 2005 efans on amazon and ordered my black bear tune. My problem is that i need a harness but dont know which one. LS1fans.com has a harness for 99-02 and then a harness for 03-up. My truck is an 02 but the fans are off an 05 so which harness do i need? thank you in advance.

 

I was confused by your pm, you can actually do either one but 99-02 would be easier to setup. 03+ is a little more difficult.