hey does anyone know wut color wire the Feild wire is for the alt.? like if u unplug the conector in the back of the alt. there are 4 wires, i want to put a swich in that wire so i can turn it on and off, because my friend who was part of a drag. team would do this and turn off the feild for the alt. when he was racing so it would spin freely, and that would give the motor an extra 10hp or so. if ANYONE can help me here it b great. thanks.