I have a Car Radiator Fan motor for 12v DC, 2-wire and pulls 1.5A when unloaded to something near 6A when loaded. I am using it for another project and need to reduce the speed by half. It need not be variable, just a one step reduction to near half the normal speed. Any simple tricks to do it? Can use FET's or anything, but I would prefer to have it built for 10A load. I searched and found only PWM driven variable models, which would not be of much use for my application. How to go with this?