01-08-2011, 12:09 AM
In my experience, bronco or other, grounding has been my #1 problem. Keep in mind, I'm more a FSB guy, so my help on an EB is just barely more than shooting blind... but grab yourself a meter (saving my "Good meter" speech for later) and start at the taillights. Work toward the dash and see where you lose the power. Your symptoms sound like it could be the dimmer switch, so I suppose you could check that out first by either temporarily bypassing it, or ohm it out with your meter.