I am running Gen 7 on my car and want to hook up the cooling fan's..well the Gen 7 comes with wiring for a fan ? is there a way for we to hook up both fan's to come on with one sig ?

 

You want to be able to control both fans with one switch? As long as you have the the relays wired properly, this should be very easy. Make sure you have a good heavy duty switch that can handle a bit of amperage and then run the grounds from the relays to the switch and the from the switch to a good ground. I like doing it this way for the simple task of not having a hot wire going to the switch all the time. If you want to have the fans controlled by a sensor then the same situation applies but connect the grounds to the supplied sensor.