I am retrofitting a 73 Mustang Conv, with 85 302HO Mustang and the ignition system. I have wired it like the diagram from mustang Steve on this web site and replaced everything eg (coil,Module,Regulator,Solenoid)but the pick up and still no spark, How can I test the pick up? Also the wiring diagram for the 85 shows a two speed electrical unit in the original wiring, do I need to install that as well? And I have just put the wiring back in the car, does anyone know where I can find a wiring diagram for under the hood? The one that I found for 1972 in not complete for 1973. Just need to double check everything. Thanks for any help, Mike Putnam.