Thanks for the responses. Believe it or not, I called Proform directly and their tech support could NOT tell me what the wires were coming out of the distributor...as far as which is positive and which is negative. Again, I have a ford 460 with a proform distributor with the magnetic pick-up inside. ( their is no coil or any module on the cap. Does anyone know about this distributor? It has 3 wires coming out of it: RED, BLUE, AND BLACK.