Junction Box and 7-Way for Rewiring Trailer for Lights and Brakes

Updated 03/17/2021 | Published 03/12/2021

Question:

Hello - I have a 7’w x 12’L tandem axle enclosed trailer I need to reword completely for break/tail lights as well as new brake set up/wiring harness, need new lights as well. Could you help me make sure I get all the correct components, please Thank you

asked by: Schott G

Expert Reply:

The best place to start when rewiring a trailer for lights and brakes is a junction box and 7-way kit like the part # 277-000141. You'll mount the box on the trailer frame (typically) and then run from it to each of your lighting and brake circuits. For the brake output, ground, and 12 volt accessory (if needed) you'd want to use 10 gauge wire like # 10-1-1.

Now for the rest of the components I would need more info from you. Pictures of the lights you have now would be very helpful and for the brake components I would need to know what capacity your axle is to pick out the correct brake assemblies.

expert reply by: Jameson C