Yesterday I backed the cuda out of the and shop shut it off. 3 hours later when I went to pull it back in the car would not start. Im getting gas but no spark your ideas / suggestions. Voltage reg??

(1) pull the yellow wire off of the "ign" terminal on the starter relay to disable the starter (no need to run the batt down). (2) hold the coil secondary wire (dist end) 1/4" from the intake (ground). (3) seperate the dist pickup zigzag connector & drag the male terminal on the closer to the ign box half across the intake to make/break ground & see if that produces sparks while a helper holds the ign key to "start". If it sparks the prob is in the pickup: continuity/gap/open in the 2 wire connector. If it does not spark plug the zigzag connector back in & take off all (maybe only 1) wires from the coil negative primary terminal & with a jumper wire ground that terminal (not the wire you removed from the terminal) by tapping it on the intake & see if the coil wire makes sparks same as before with the key held to start. 2 terminal (single) or 4 terminal (dual) ballast?. If a 2 terminal jump across it & see if it will start (several seconds only) & if 4 terminal jump across the downstream end so you have a loop on both ends & see if it will start. With a VOM see if you have fire at the bulkhead terminals, the ign2 (brown wire crank circuit). Might be as simple as the ECU died. Holler back when you can

Also, real simple one - have someone crank it over & jiggle the wires to the ballast resistor & see if it starts. If it does, it's a bad ballast resistor. Or if you have a spare, change it & see if that works.

Real simple - run a jumper wire from one end of the ballast to the other. - eliminating the ballast resister. Now try it. If it starts replace the ballast resister. Won't hurt a thing to bypass the resister to test

Well I had a spare ballast resistor in the glove box and swapped it out. No luck! I went and picked up a new ignition module. The new one has a 4 pin connetion and the old one which is the original is a 5 pin. What the difference? I dont want to install it until i confirm it is the right one. Thoughts?

it will work.

RR is right the 5 pin should work on a 5 pin system but a 5 will not work on a 4 pin system.

Thanks guys! I appreciate all the help and wisdom. The new ECU fixed the problem. I now will keep some spare parts in the glove box. If not for me it could help out some Mopar friends too.