low beam problem

my passenger side low beam is out, checked the bulb and the fuse and both are still good...the passenger dtrl also was not working until i wacked it and all of a sudden it came on, but low beam still doesnt work...this leads me to believe that it's some kind of wiring/electrical issue...i was just wondering if anyone knows where i should start to try and find the issue...is it hard to replace the wiring to the dtrl and the low beam...also how come the high beam works but the low beam doesnt.

 

Wolfpack hit everything pretty much on point.....Disconnect anything or reconnect anything that could've shorted out parts of your electrical system? Think we need some history on the issue. Was it progressive or all at once?

 

no recent anything, all of a sudden one day i noticed my passenger side light was out, i just did the bhlm but i actually only did it cuz i was gonna be changing the bulb(or so i thought) so i did that...i swapped the bulb and just the low beam is still out as well as the dtrl every once in a while...i gotta go pick up one of those testers and check it out tomorrow

 

negative on the intake... and yah the bulb is all good