"fan motor is toast" and motor will not run no matter, makes sense now. Thanks.
I was expecting a new fan to read more resistance. 4 ohms seemed low so I started reading about electric fans.
Now it gets complicated. Some fans have step resistance to vary motor speed. So 4 ohms is probably normal???
I have no idea without more information. Some fans have built-in control circuits and radiator temperature sensors.
I did a quick look at the Champion Cooling website but I wasn't able to find much information on their fans.
Back to the old fan. Just a thought. 0.01 ohms could have caused you regulator/rectifiers to overheat and voltage to go up.
For now I would definitely use a fuse for a quicker reaction to overcurrent rather than a circuit breaker.
