what is the correct way to wire up my switches? i got a jasons fromt set up with 3 toggle switches. i have 2 3/8 dumps and 2 1/2 fills. i want to use the three switches for front left, front right, and front. im assuming that i hook up the dump to side of the swtich and the fill to one side and then the 12v to one of them, then how do i hook up the switch where it controls all 4 valves?? do i just hook it to all of them?????/?