i have a headlight out on my 02, changed bulb, nothing. the low beam on the passenger side is out, but the highbeam works. theres a plow hookup on the truck, that I installed, so I figured the problem was the plug on the plow harness, I plugged it back into the truck plug, eliminating the harness entirely, and still no low beam. all the fuses seem to be ok, my next step is to change the headlight plug itself, has anyone else had this problem?