saying hi and asking questions

What's up guys and gals. I just got the wife an 04 durango..at first she didn't want anything this big,but after I did the test drive and showed her, we just love it...going to have this one for a long time..its the hemi 5.7 magnum,red in color..now for my question ..the trailer harness.. the brake lights work but the running lights don't, its the factory tow package as I followed the wires to the front,didnt see any breaks or rips in the wiring..any help would be gladly taken and applied