i am going to the track friday and wanted to install my ls1 fans before then. i got part of the stock fan harness from the guy i bought it from, it has 4 wires coming out of it, i think theres 2 black ,a blue and a white. how would i wire this up,just for now,like a thermostatic switch,and backup toggle switch?and later on ill do it through my pcm.also, i see the install is as simple as removing the clutch fan and shroud and installing the ls1 fans and making some brackets?

 

i was also wondering ,how they work, the fans run sepaerate, one for the ac ,and one for the radiator???

 

i tied both together and used a flexalite VSC to control the fans. used it this way for years. and use the same setup on other rides. i do recomend a relay inbetween the fans and vsc if you run both fans together
or the old tied and true method of toggle switch and power

 

I Think For Now Ima Try The Toggle Switch Method. At What Temp Should I Turn Them On? Also, I Will Need A Relay Also,correct?and Should I Wire Them Together?

 

i can build ya a harness for your fans JLMK, i can have it to ya today if you want it!
and if you cant get PCM pin 42 enabled by friday ill show you how to run a toggle to the harness and use it until you can get a tune. You could keep the switch to turn on the fans in the lanes where you can cool your engine down while the truck is off

It will look factory

 

Thats My Problem. My Pcm Is A Nelson Pcm And Is Locked, I Have Another Pcm , That I Am Gonna Get Reflashed But Until Then I Figured Id Try This Out. Will A 30 Amp Relay And Inline Fuse Work?

 

maybe you could show the temporary wiring with the toggle anyway? lol i'm waiting for my compter also but i'd like to have the fans for the track this friday. does anyone else have wiring diagrams? i'd like to do this myself if possible seeing as how im super broke. anyone?

thanks,
Clint

 

clint,
wire the fans up with the harness. get a 2 prong toggle switch.
run one wire to a ground and the other wire tapped into the wire that goes to the pcm.

 

i wired up two relays, one for each fan..i used to have a tempature contolled relay but it burned up, then i just used a ford solenoid for a few weeks then i just got two relays and wired them up like a nitrous kit..very simple and never had any problems, comes on when the key is on..this winter im going to rig up a lighted toggle switch

 

if you run a relay bettween the vsc and fan is the soft start featurestill apply or does it do away with that feature and what amp relay