I have a 2014 Sahara and the dash lights have been flickering on and off (traction control, battery, and others) all of the gauges go flat, radio shuts off and then they come back on. I had the battery tested at a local parts store. I have been trying to look up what could be wrong and have checked my fuses and wiring. There was an aftermarket light bar and led headlights added and the wiring is straight to the battery. I do not know where to move the wiring to, or if that could be the problem. Battery terminals do not seem to be loose. Anyone have advice?