My headlights are not working again..The running lights, turn signals, inside dome lights(incl dimmer function) all work...Just no hi or low beams..Last time this happened I just replaced the headlight switch and all was fine...Now, it has happened again approx 4 months later...I have tried yet another HL switch(from NAPA) with no luck..I have also tried a multi-function switch...Same result...I have previously installed aftermarket relay(s) and upgraded wiring harness..I have checked all fuses and tested relay(s) function..I have also tried a stock headlamp that I had(known good) and it does not work either..Not sure what to try next...Any help would be appreciated,,Sucks not being able to drive Jeep after sundown....Thanks