my nightmere (msd)

what about the thick black wire? is it on a good ground ? is the smaller red going to 12 volts? is the blue wire 12 volts or is it less? unplug the the green and violet and put a jumper wire in there and then turn the key to on. you should see a spark when you move the jumper wire. do you have an electronic ignition distributor? are the green/violet wired backwards?