Wiring Diagram

Marine Master Trailers utilizes different types of wiring harnesses and plugs for various trailer models. Wire colors are:

BrownRunning Lights
YellowLeft Turn and Left Brake
GreenRight Turn and Right Brake
BlueBackup Lights and Solenoid Lock Out (disengage brakes while in reverse)
Optronics A30W5BL2BP34′ Jacketed 5-Way Wiring Harness with 7 Pin blade connector (trailers with brakes and/or backup lights)
Optronics A57CCB5-way flat to 7-way round, coil cord
etrailer.com How Tohttps://www.etrailer.com/faq-wiring-5-way.aspx

More info to come…