not charging properly

That explanation doesn't make sense on first pass. Perhaps an experience with a Ford. Mopar solenoids are integral to the starter. If the starter's case wasn't grounded well, the engine wouldn't turn over.

I doubt a wire is grounding, since that would likely blow a fuse. Best guess is that you have a loose connection in either the bulkhead connector or ignition switch. Try wiggling the wires around both, while monitoring voltage with a cigarette lighter voltmeter.