Trailers without brakes are and strenuous to polity
If you get a overnight trailer or one that due carries freight, adding electric brakes to it Testament commit you quicker stopping faculty and check. Properly wiring the trailer's electric brakes is critical however not ambitious.
Instructions
1. Install a seven-way Apartment lodgings blade RV connector. Cut-off the trailer four-pin electrical connector and strip 1/4 inch of insulation from Everyone wire.
The seven-way Apartment lodgings blade RV connector plug has six Apartment lodgings blade connectors arranged in a Hand-bill representation with one Hand-bill connector in the Centre of the plug.
Provided you Stare at the Apartment lodgings blade trailer connector from the distant bound, the edge that plugs into the tow vehicle, it has two Apartment lodgings connectors on top when the flange is facing up, two on the backside, one on the left side and one on the ethical side.
Connect the existing trailer wires and the recent brake wires using this colour statute:
Top left: ebony wire, 12-volt battery faculty.
Top honorable: brown wire, tail and running lights.
Left : fresh wire, prerrogative turn and closing lights.
Fly: treacherous wire, left turn and location lights.
Backside left: depressed wire, brake controller wire.
Backside fair: white wire, ground wire.
2. Pace a plenty of 10/2-gauge brake wire from the left revolve to the prerrogative spin along the trailer axle. Attach the wire to the axle with punch ties.
3. Dash 10/2 brake wire from the trailer connector to the hold up circle brake backing plate along the frame. Attach the brake wire to the trailer frame with wire clips.
4. Connect the charcoal 10/2 wire time to come from the trailer plug to one of the right wheel wires. It does not affair which one; they are not polarized. Connect the caucasian 10/2 wire to the other fitting revolve wire using 10-gauge solderless connectors.
5. Connect the ebon 10/2 wire zip-tied to the trailer axle to one of the left turn wires. It does not affair which one; they are not polarized. Connect the breakaway wires. Connect one of the blue wires from the breakaway switch to the black wire going to the trailer brakes. Connect the other blue wire from the breakaway switch to the blue wire of the battery box. Connect the white wire from the battery box to the grounding bolt on the trailer frame.
Splice the blanched brake wire from the left wheel to the right wheel's white brake wire using 10-gauge Scotch-locks.
8. Make a ground connection. Drill a 1/4-inch hole in the trailer frame tongue. Scrape the paint off a 1-inch diameter area around the hole on one side of the frame. Coat the scraped area with dielectric grease to keep corrosion away. Install a 1/4-inch by 1-inch galvanized bolt with a galvanized washer and lock washer on the scraped and greased side of the trailer frame.
9. Connect a 10-gauge white wire from the trailer ground connector to the frame grounding bolt. Attach the wire to the bolt with a solderless 10-gauge eye connector.
10. Connect the 10/2 white wire coming from the wheel brakes to the grounding bolt using a solderless 10-gauge eye wire connector. Coat the grounding bolt and connectors with dielectric grease to prevent corrosion.
11. Connect the 10/2 black wire coming from the wheel brakes to the bottom left blue wire, brake controller wire on the seven-way flat blade RV connector plug.
12. Install a breakaway battery box to the trailer tongue. Install the breakaway switch to the trailer tongue.
13. Connect the fair 10/2 wire to the other left spin wire using 10-gauge solderless connectors.6. Splice the livid brake wire from the left trundle to the equitable spin nigrescent brake wire using 10-gauge Scotch-locks.7.
14. Test the trailer brake connections. Hitch the trailer to the tow vehicle, connect the seven-way flat blade RV wire connector plug and activate the breakaway switch by pulling on the safety cable. Pull the trailer with the tow vehicle and see if the brakes apply. If there is a resistance to the tow vehicle, then the brakes are working. Release the breakaway switch and apply the vehicle brake controller while driving. The trailer brakes should apply proportional to the amount of pressure you apply to the brake controller.
