Trailer Breakaway Battery Wiring Diagrams. The black wire from the harness connects to electric brake on the truck goes to one wire on each of the four brakes. You can also watch a video where glenn explains how to wire a 7 pin plug here.
The engager break away system is designed to bring trailers safely to a stop wire coming from the trailer side connector a see diagram on next page. Trailer wiring diagrams trailer wiring connectors various connectors are available from four to seven pins that allow for the transfer of power for the lighting as well as auxiliary functions such as an electric trailer brake controller backup lights or. It can transfer power better hence the connector is suggested for higher level electric in the auto.
Below we have the wiring diagrams for both a 7 and 13 pin connector.
Power for all normally on lamps. Connector style pin function color description. Blue wires are interchangeable on the break away switch 3. Splice the second black wire into the blue wire leading to the trailer brakes this wire should test for 12v when the vehicle brakes are applied.