Ground to what..??

And on that line, it's ALWAYS good to improve the battery to engine/ body ground. On a V8 you have the same holes on the rear of the driver's head as the front of the pass. side. Take a short bolt, buy a "Ford style" starter cable --eyelet to eyelet--a foot or 18" and ground it to the firewall. Either the master cyl. studs or a dedicated bolt through the firewall, with star washers

Other than lamps, two other components that suffer from poor grounding is the VR and if used, the Mopar electronic ignition ECU. Make certain they have good bolts, star washers.