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Thread: LS1 fan swap ?? Relay hookup

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  1. #1
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
    Posts
    3,581
    if you click the link i provided it is a diagram of how the relays are wired

    Quote Originally Posted by TRPLXL2 View Post
    I appreciate the reply guys, but I managed to figure it out tonight after another 4 hours of troubleshooting.. Basically the instructions that Ron Francis gave with their relays sucked, following those Is why I couldn't get it to work. I ended up following a chart off of LT1swap.com, I basically ignored colors and just ran with following numbers of the relay. First attempt and they work, so I soldered them up and made some adjustments in HPTuners and they're good to go!! Here's how I wired them for future reference:

    terminal 30-87a (jumper wire connecting the two)
    terminal 30 & 86 (battery + 25 amp fuse)
    terminal 85 (ecm signal wire)
    terminal 87 (+ cooling fan)

    I just grounded the fans to the battery, and presto!!!
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

  2. #2
    Join Date
    May 2009
    Posts
    428
    Currently I have no AC setup, so that Is why I didn't setup the 3 relay setup. I think we are going to do Vintage air down the road next year, they're gen 3 Sanden setup is very nice. Prices where I'm at are ridiculous for the LS1 stuff, and used ac compressors go for about $150. I do appreciate the help though....

  3. #3
    Join Date
    Nov 2007
    Location
    Pittsburgh, PA
    Posts
    3,581
    Quote Originally Posted by TRPLXL2 View Post
    Currently I have no AC setup, so that Is why I didn't setup the 3 relay setup. I think we are going to do Vintage air down the road next year, they're gen 3 Sanden setup is very nice. Prices where I'm at are ridiculous for the LS1 stuff, and used ac compressors go for about $150. I do appreciate the help though....
    ill have a truck ac compressorr and bracket for sale if you need it. from a 00 motor setup.....yes truck ac will work with fbody accesories, you just need to enlongate the holes on the bracket some.
    2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
    2002 Silverado - 427Lsx w/ Twin gt4202s
    2010 Silverado crewcab Z71 - 5.3litre w/ procharger
    2000 Wrangler - 5.3litre with some stance
    2014 Xsport- 3.5 Eco boost
    412 Motorsports

    it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference

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