Ok so i have a chevy c1500 fullsize truck i recently got a electric fan set up out of a Camaro a 2 fan set up ac and engine now the problem. I mounted the fans to the radiator tested the polarity and spiced the fans together to 1 wire for ground and 1 wire for the power wire. for now i am doing a manual switch and i have it likethis Battery----switch----fusible link-----fans
now when i flip the switch it is burning up a 30 amp fuse in the fusible link so just for shitz in gigglez i decided to try it only running one fan still blows a 30 amp fuse when i flip the switch. i have everything ran with 12gauge wire
Any suggestions?

 

Well, if you are 100% SURE that your wiring is correct, I'd blame the fan motors. It wouldn't be the first time that a fan motor would cause a 50A+ draw on the circuit, blowing all fuses. Been down that road.

Also, your fuse/fusible link should be as close to the battery as possible, that means BEFORE the switch, not after it.

Hope this helps.
Lou

 

The fan motors have a diode in them to reduce sparking
at the relay contacts when the motors shut off-if the motors are connected backward(or have been before) that
diode can short out,you will have to take the motors apart
and clip off the diode(they work fine without it) or get new
motors.also sometimes the fans get jammed with ice or
snow and burn out-remove a fan blade(the nut is reverse)
and look at the armature windings through the vents-if
black+charred,burnt out motor-if windings ok(probably
will be some normal black carbon dust from the brushes)
the diode is shorted and needs removed.
fans pull about 10 amps each once up to speed

 

ok so a update on the problem i ended up just trying to work on the passenger side fan and it works fine doesn't blow fuses or anything only the driver side and i tried the 40 amp with a separate circuit with the driver side fan any suggestions havnt taken apart the fan to look at diode thing but anyone know anything else?