Web a 4 way switch is a double pole double throw (dpdt) switch. It will show you how to wire up the trailer’s lights, brakes, and other components to your vehicle. Connect to the first three way switch.
4Way 5 FT Flat Wiring Trailer Truck RV Camper Utility Boat Light
This gives you all the needed lighting functions to travel legally with your trailer.
The Brown Wire Is For The Taillights/Running Lights.
Web a 4 flat trailer wiring diagram is a great way to get started.
