what do i need to know to install a 7 pin wiring harness?
hey i just bought a new 6x12 trailer and it came with a 7 pin harness and i only have a 4 pin. i realize i can get an adapter but i want to utilize the brakes so i am planning on installing the new wiring tonight if i can get some help from you guys. other than running the wire to the rear of the truck what else to i need to know? where should i plug it in to? thanks for all the help i appreciate it