Since there wasn't a dedicated thread or mention of this any where I could find on this forum. Today I wired up reverse lights on my 70ch big tex trailer. Ran my wire for the pods got an inline fuse just incase. Went to run the wire for the plug. There wasnt room or a wire for the center plug. I ran to northern tool grabbed the best looking 7 blade they had. Turned out it was a rv style molded plug. This means the wire colors are different but it is a true 7 blade instead of 7 blade but only 6 wires. Color conversion is this. Trailer wire yellow --> plug wire red for left side brake turn signal Trailer wire green --> plug wire brown for right side brake turn signal Trailer wire brown --> plug wire green for tail/marker lights *Trailer wire black--> plug wire blue electric brakes* **Trailer wire blue reverse lights --> plug wire yellow** Trailer wire red (constant hot) --> plug wire black Trailer wire white (ground) --> plug wire white *In my case the black wire on the trailer is the eletric brakes according to the battery box.* **This depends if your trailer already has reverse lights or a wire for them. Mine had two random blue wires that were not connected to original plug. I had functioning brakes so I know these are not suppose to be brakes.** I couldnt find anything that broke this down simply plus my trailer was weird and didnt match the normal brake controller wire.