How To Wire A Breakaway Switch On A Trailer

If there is a third wire its hooked to a small charger that charges the battery off the tow vehicle through the trailer plug. One wire to electric brakes one to ground from battery. The wiring and mounting requirements as well as the procedure for testing your breakaway system are covered in the two articles i linked for you.

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A break away switch with 3 wires is for a trailer without a battery charger.

How to wire a breakaway switch on a trailer. Trailer breakaway wiring schematic brake switch wiring diagram trailer breakaway switch wiring diagram. Bolt breakaway switch to frame of trailer or battery case bracket. The breakaway switch also known as a plunger is connected to the hitch when the trailer separates from the tow vehicle the switch immediately sends a signal to the trailers brakes to slow down and safely stop the vehicle. One wire is the ground wire.

Remove charger and battery from the battery case. The second wire hot connects to the breakaway switch. Trailer breakaway wiring diagram 3 wire trailer breakaway switch wiring diagram hopkins trailer breakaway wiring diagram rv trailer breakaway switch wiring diagram people today understand that trailer is a vehicle comprised of quite complicated mechanics. Mount the switch to the trailer with a self drilling screw through the hole in the mounting tab.

How to wire a trailer breakaway switch. Splice one of the two wires coming out of the breakaway switch into the trailer brake wire running from the trailer connector to the brakes. Variety of trailer breakaway wiring schematic. The battery is equipped with four 516 inch holes but it is only necessary to use two of them.

There are two wires connected to the battery at the top. Open the battery box and connect the second wire coming out of the switch to the positive post red on the battery. This car is designed not just to travel one place to another but also to take heavy loads. Mount the battery box inside the trailer frame in a protected location.

Then the wires from the breakaway switch are spliced to the trailers brake wires. The wires from the battery connect to the breakaway switch providing the necessary power. This connection will send power to the breakaway switch. Feed wires out the back then close the top.

This battery is charged by the tow vehicles charging system only. The battery to power the break away switch is a motorcycle battery in a plastic holder. Mount battery case securely to frame jack post or other suitable location on trailer. Check and install battery and charger into the battery case.

Click on the image to enlarge and then save it to your computer by right clicking on the image. Your best bet is to re wire the trailer to match your suburbans 7 way setup. I use them on my farm trailers.