Originally Posted by dzrt_ranger
So I'm looking into doing this swap. Is the only way to wire it up with a 2 way switch? Is there any way to splice into some wire so that it turns on and switches between high and lo when it reaches a certain temperature?
I'm going to take a stab at this:
Assuming our trucks have some sort out overheat idiot light, you could just radio into that to run the solenoid for the high speed on theses fans. I'm sure if we figured out how that light its triggered (relay hooked to a temp sending unit/switch?) then we could rig up another one to come on just above or at the desired operating temp.
Just have to figure out what it takes to make one of the switches, probably find another location to mount the sending unit/switch thing. There are usually plenty of unused plugs on the intake that access the coolant.
Edit: Just did some googling and found this:
Its a temp switch, on at 200 off at 170. I'm sure there are different ranges, maybe even one with two leads for different temperatures.