i just finish modifing mine, i had a off-on switch with a 12 volt system and a 6 volt motor and the rpm was so high i couldn't even hear the engine, soooooooo i put an on-off-on switch and a reducer on one side and a direct hot to the fan wire on the other side. one way to force air up to the defrosters is to cover most of the floor outlet with good ol duck tape, black if you have it to make it look good, ha ha!!!!!!! RON
