Can Second Trailer Have Trailer Brakes Activated as Well

Updated 03/02/2017 | Published 03/01/2017

Products Featured in This Question

Adapter 4 Pole to 7 Pole and 4 Pole w/Test Lamps

(312)

$42.73

10 Gauge Wire - Blue Primary - Per Foot

(104)

$1.75

Question:

I just had a tow bar instulled to the rear of my fifth wheel, now I need to know how to wire for a plug 5 hole so I can tow my ski boat with brakes behiond it.

asked by: Rick J

Expert Reply:

Sounds like you are towing two trailers that both have trailer brakes. As long as the brake output circuit is completed from one trailer to the next the part # C57674 would work to send the amperage to each trailer. You will want to be sure that each trailer has 10 gauge wire for the brake output circuit like part # 10-1-1 (sold by the foot).

The blue wire of this adapter would need to get run to the output of a brake controller that is designed to handle the amount of brake assemblies your two trailers have.

Or, if you are planning on using the # C57674 on your first trailer for attaching to the wiring of the second trailer this would work as well. It would be just a matter of connecting each of the wires to the correct circuit to get it to work right.

It's going to be basically impossible to get both trailer's brakes to activate with the same intensity. One of the trailers brakes are going to lock up before the other most likely so you will have to compromise.

Typically we recommend that people do not tow two trailers. Also, it is not legal in all areas so you would need to contact your DOT.