Joe - don't you have the original style motor with the cable actuating the switch on the motor? there's only one wire off that OEM unit, the mounting supplies the ground, the case mounted switch controls power
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics