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98ka24det · 07-14-2007, 10:13 PM

My setup was as follows:

An adjustable therm with 2 prongs to it. Both prongs were OPEN when the therm was out of range. When the therm reached my temp setting, it provided continuity between the 2 prongs. SO what i did was one of those prongs went to CHASSIS ground via 10-12 gauge wire. The other prong on the therm went to the NEGATIVE side (again via 10-12 gauge) of the 12V 30 amp SPST relay COIL side. SO when the therm clicked... it provided GROUND to the coil.
The positive side of that coil on the relay was fed from my wiper motor via 10-12 gauge since it was the ONLY source in the engine bay that i could find that had 12V while the ignition was OFF and turbo timer was running.. this way the fans would stay ON while the timer was running...
Dont know why i used such thick wiring for the coil side on that relay... its just a coil.... but oh well..
Next i took the 2 negative wires from the fans and tied them together and put them to chassis ground.. The wires comming off the fans were smaller than 12 gauge just to let u guys know this...
I then took the 2 positive wires from the fans, tied them together and slapped them to the relay (non coil side... duh..)
The other side of the relay went to 12V at the fuse box in the engine bay. I tied it down to the screw post cause that cames directly from the battery. I also put in an inline fuse holder with a 30 amp fuse and that holder was also a 10-12 gauge wire on each side...

I used larger gauge wiring than the wiring that was used on the fans from factory... Now these fans were rated at 19.5 amps and they said to use a 30 amp fuse which is what i used. Maybe i was wrong at putting both fans together on the same circuit / relay / fuse and it was getting too hot and too overloaded to the point where it would keep blowing fuses as i was experiencing....

These fans were over 5 yrs old and they lasted this long wired this way, granted they blew fuses 1-2 times per week, but they kept on running till now..

Who knows, maybe if i would have wired each fan on its own relay and own fuse... maybe they might still be working today and blowing less to no fuses...

Oh well, i liked the FAL's... they worked, but i think i may try a different brand this time. Something with more CFM's cause its like 95 deg out and im gonna need all the cooling i can get... And NO im NOT gonna wire them to run all the time... thats rediculous. Not only does that strain the elec system, but u dont need fans running while ur on the hwy....

07-14-2007, 10:13 PM	#6
98ka24det Leaky Injector Join Date: Apr 2003 Location: Orlando, Fla Posts: 54 Trader Rating: (0)	My setup was as follows: An adjustable therm with 2 prongs to it. Both prongs were OPEN when the therm was out of range. When the therm reached my temp setting, it provided continuity between the 2 prongs. SO what i did was one of those prongs went to CHASSIS ground via 10-12 gauge wire. The other prong on the therm went to the NEGATIVE side (again via 10-12 gauge) of the 12V 30 amp SPST relay COIL side. SO when the therm clicked... it provided GROUND to the coil. The positive side of that coil on the relay was fed from my wiper motor via 10-12 gauge since it was the ONLY source in the engine bay that i could find that had 12V while the ignition was OFF and turbo timer was running.. this way the fans would stay ON while the timer was running... Dont know why i used such thick wiring for the coil side on that relay... its just a coil.... but oh well.. Next i took the 2 negative wires from the fans and tied them together and put them to chassis ground.. The wires comming off the fans were smaller than 12 gauge just to let u guys know this... I then took the 2 positive wires from the fans, tied them together and slapped them to the relay (non coil side... duh..) The other side of the relay went to 12V at the fuse box in the engine bay. I tied it down to the screw post cause that cames directly from the battery. I also put in an inline fuse holder with a 30 amp fuse and that holder was also a 10-12 gauge wire on each side... I used larger gauge wiring than the wiring that was used on the fans from factory... Now these fans were rated at 19.5 amps and they said to use a 30 amp fuse which is what i used. Maybe i was wrong at putting both fans together on the same circuit / relay / fuse and it was getting too hot and too overloaded to the point where it would keep blowing fuses as i was experiencing.... These fans were over 5 yrs old and they lasted this long wired this way, granted they blew fuses 1-2 times per week, but they kept on running till now.. Who knows, maybe if i would have wired each fan on its own relay and own fuse... maybe they might still be working today and blowing less to no fuses... Oh well, i liked the FAL's... they worked, but i think i may try a different brand this time. Something with more CFM's cause its like 95 deg out and im gonna need all the cooling i can get... And NO im NOT gonna wire them to run all the time... thats rediculous. Not only does that strain the elec system, but u dont need fans running while ur on the hwy....