Check ur brown wire connection. New from China don't make it work........Originally Posted by Slipbobber06I'm having trouble with my trailer lights. I could not get the old lights to work properly, so I went and bought a new light kit and wiring harness. I drilled a hole in the trailer and attached my ground wire with anut and bolt, ran the new wiring and wired in the new trailer lights. My brake lights work and both the left and right turn signals work. When I turn on the truck lights the trailer lights do not come on, so I can't drive at night. I bought a tester to test my hookup from the truck and the tester says everything is ok from the truck, What am I not doing right? Why won't the lights come on when I turn on the truck lights. I have not tryed to hook in the side running lights until I get this solved, and do I even need to hook them up.