I have a 2006 jeep grand cherokee 4.7 my problem is with the trailer lights the left/right turn signals and brakes don't work the running lights do work anybody have any idea what the problem could be. your help would be greatly apprecited.
youll need a meter, or test light to diagnose, start at the plug, and go from there. could be as simple as bulbs. the running lights utilize different filaments than the brake,turn lights do.2 filaments per bulb