Good strong harness. It has separate left and right brake hoses from the fork so you don't have to run a cable to one taillight and then run a separate cable from that through the trailer to the other taillight. This greatly facilitated the work of laying wires. The instructions looked clear too. It would be nice if there was a cover for the trailer fork. But it kinda does when you do what I did. The included smaller wiring harness is designed to connect to your vehicle and has a female connector. I didn't need this harness as my car already has its own trailer signaling harness. Therefore, I cut this outlet from an unnecessary cable. I use this socket as a plug cover for trailers.