I have an Aspen motorcycle tent trailer, with 6 wire round connector, and wanted to tow it behind my car, which has a 4 wire flat connector. The car uses the same wire for left/right turn signals AND brake signals. However, the trailer has a separate wire for brake and separate for turn -- I understand this is the way most motorcycles are wired, so the trailer is wired the same.
Is there a way to make the brakes work other than running a signal from the brake pedal of my car back to the trailer wire? Something simple?