Spectacular Reverse Wire On 7 Pin Trailer Plug

Plug size is similar to an australian 10c coin.

Reverse wire on 7 pin trailer plug. It will need to connect to a reverse light wire behind one of the vehicle tail lights. You will want to find out if the blue wire on your trailer is needed for 12 volt power for trailer accessories for electric brakes or for a reverse brake lockout if your trailer has surge hydraulic brakes. Locate this wire where it comes out of the interior fuse box.

On the trailer side the matching pin is again the center pin. Connect the black wire for your 7 wire plug to this wire. More information follow up questions add comment.

Small 7 pin round qld identifying. What size wire gauge is used for a 7 way wiring harness. Take your 7 pin trailer plug or socket and unscrew the cap remove the cable gland and outer casing.

0 5 feet long. Reverse lights need to be white clear. All diagrams are as viewed from the cable side see example above.

Tighten screws while holding cable in place. These can be different colors which i get is confusing but you will need to do some deductive reasoning or use a circuit tester to determine the function and color. Find the blue wire that comes off of your electronic brake controller.

Match each coloured wire to the appropriate circuit as per relating wiring diagram provided above and place the wire end beneath the correct screw. Using a phillips head screw driver loosen but do not remove the 7 screws. On the vehicle side if you are looking at the back of the 7 way where the wires connect the reverse light circuit is the center pin.