Quote:

If bypassing the control box works, you'll want to use a relay.
Bosch relay number 0 332 002 150 (Echlin AR298) is a 75 amp relay.



Note the measurements are metric.

You can run this in conjunction with a thermostatic switch to control the fan.

If wiring the fan directly works like my shop foreman stated, you should be able to use high and low speeds. One switch for high, one for low.



that might be a good option. wouldn't that take 2 relays though? one would have to be off when the other was on.

machine shop owner and engine builder