Quote Originally Posted by 567234ta View Post
thats how i had my truck setup before i did the swap. the elec fans were controlled by a thermo probe that stuck thru the fins of the radiator and a switch on the dash so i could turn them on whenever i wanted.

the reason i say use a relay is so you arent having to run the power needed for the fans thru a switch. they use alot of amps and its not good to have that much power running thru your firewall and dash. its pretty easy to setup on relays and much safer.
it doesnt run through my firewall plus i have a 0/1 gauge power wire running through the same area as this 10 gauge wire so im sure its fine. works great! i have a fuse before the grommet on both wires so itll blow and cut power if it faults out some how.