Just purchased 2007 Xterra S 4L with the factory trailer light harness, and the parking lights will not turn OFF (key removed, door locked/unlocked). NOT the brake lights. Rear tail lights left and right, front yellow corner lights left and right, and yellow turn signal running light (low beam) left and right. Have removed 2 fuses (Illumination and Tail Lights) to get lights off, as not to run battery down. Turn signals and flashers work fine front and rear, even after removing fuses. Battery has been replaced, as it has been sitting dead for a long time. Have remove aftermarket alarm as I thought that might be the problem. No Engine or ABS codes. Truck runs fine but need to fix this issue before I take it on a long trip. As far as I can tell there is no specific relay for front and rear running/parking lights to stay ON. I can not figure out how a short or relay can cause 2 different circuits to stay ON??? I suspect the BCM, but would like some outside input before I even think of replacing expensive parts... as I am cheap.