this is how i bought the car. is the fan switch wrong?bracket wrong?All the wiring diagram show 3 wires not 4 :banghead:The switch bracket looks rigged to me and there is no 4th wire on the dash harness.This is on a 74 challenger 318 ac car. Also YEARONE sells the switch with the 4 prongs not 3, would the switch be universal since the switch will also go on a 74 charger and they have 4 wires. thanks