The car's been converted to an electronic ignition system. Would that change anything? Also hold on, gotta look for some lengths of wire near me that I can use to run it all the way from the battery to the ignition coil.
If fiddling the switch does not get you power to the ignition switch, jumpering the ballast should be the same, except you may have a 4 pin ballast. HOWEVER the great majority of of Mopar ignition boxes do NOT need a 4 pin ballast. They only need 2.
If you have a 4 pin, I would jumper battery power to the coil directly. I would not run it any further or longer than necessary.
