[Curt C.]

The fans control box has four connectors +, -, M (manaul overide) and C for air conditioning on. As I stated the fan has its own internal thermostat. If I hook the relay up as detailed above, it will provide juice to the fan when the engine temp sender kicks in, but the fan itself will not kick on until the internal thermostat kicks on. However, I bet if I switch the power connection from + to M, it would work and bypass the internal thermostat. Or... Instead of running 86 to a temp sender / switch, I could just ground it and rely on the fan T-stat which does work. The manual overide, which is just a switched hot wire, is already hooked up. Will one, if not both of these alternative work??

On another note, my fan (Black Magic) keeps the car plenty cool with a 380 RWHP 351W and I live in Las Vegas. However, I do have a custom four core Griffin radiator in place of the one supplied with the kit.