VERY dissapointed with these 2....

[shovelnose]

Originally posted by eatsgm:
I have a black magic fan and it works
fine ... ... when blades turn...
The kind of black box we must install
in the circuit act as a resistor and
in my case the fan works 5-10 min then
stop because that resistor become to hot.
The black box when hot became an open circuit. If it did that one time it will
always do. I have not solved the problem yet and maybe that s your problem too. just chek
that dawn box.

I don't know about the black box you are talking about, but I hope the fan is on a relay. My buddy had his wired with 18 ga. and a switch. We put a relay and 12 ga. and the fan ran twice as fast. Of course the 12 ga. helped alot.

Relays are plentiful in the wreckers. My choice has been late 80 to 90's chevy v6 cars. They are small and easy to wire. I know, I know Chevy part, but they work. I also admit the delco batteries work good too.