Comparing Regular, Fused, and Circuit Breaker Junction Boxes for Trailer Wiring  

The two light illuminations of the light part #BUL603CRB are for a lower intensity red X and a bright white. It's really ideal as a taillight and reverse light. For a similar light that's designed for stop/turn and running light we have the…

I did some research and was unable to find the white plastic you were referring to that holds a box for trailer wiring but may have a solution for you. We offer a trailer wiring junction box like part #38656. This junction box has the junctions…

The dimensions on the Pollak 7-Circuit-Breaker Junction Box, part #PK52249, are as follows, With the mounting holes on the left and the right the length (right to left) from one edge of the mounting hole tab to edge of the other mounting hole tab is…

On the Pollak 7-Circuit-Breaker Junction Box, #PK52249, the bar inside is just a mounting bracket for circuit breakers. You would connect power as needed to each circuit breaker. The bar was also designed to dissipate excess heat generated from the…

While our typical 7-way extensions like the Curt Universal 5th Wheel/Gooseneck 7-Way Extension #C56080 are a straight cable you can make an extension with a coiled cable. We have the Bargman 7-Way, RV-Style Connector w/ 6' Long Coiled Cable…

Stretching the 7-Way Trailer Connector #WG54006-043 to 6 feet isn't the best option for you. It'll reach 6 feet but the coils are fairly tight. I extended it easily to about 4 feet but beyond that it wanted to fight me. It'll loosen up…

Best option would be the Bargman 7-way part #WG54006-046 which has a molded 7-way on one end and then unconnected wires on the other. You could then wire this to the part #PK11604 based on the pinout that you need.

There is a "color" chart for the Tekonsha Bargman 7-Way Connector with Coiled Cable, Item #WG54006-046, that is below: White--Ground Red--Left Turn and Brake Brown--Right Turn and Brake Green--Tail Lights Blue--Brake Power Black--12 Volt…

The Bargman 7-Way Molded Trailer Wire Connector #H20043 is 4 feet long. We also have the coiled 6 foot #WG54006-043 and the coiled 12 foot #WG54006-046 if you prefer a coiled cord.

The wires of the connector on the part #WG54006-046 are sealed and there isn't a way to remove them. If you check out the diagram I attached, you can see how the pins of the connector are organized.

Yes you would want to run a ground from the junction box to the frame of the trailer so that all of the trailer wiring circuits are properly grounded when installing the junction box #PK52249.

The issue you are experiencing with the running lights causing the brake lights to cut out is caused by a poor ground as with most trailer lighting issues. That said, when most people check the ground they simply look at the wire and make sure it is…