Parts Needed to Completely Rewire Trailer with 7-Way for Brakes

Updated 01/16/2018 | Published 01/15/2018

Products Featured in This Question

Trailer Wiring Junction Box

(821)

$31.47

16-14 Gauge Butt Connector - 5 Pack

(31)

$4.30

12-10 Gauge Butt Connector

(23)

$0.86

Deka Jacketed 2 Wire, 10 Gauge, Brake Wire - per Foot

(323)

$3.60

16 Gauge, 4 Conductor Bonded Parallel Wire - Per Foot

(237)

$2.84

Ring Terminal - 12-10 Gauge Wire - 3/16" Ring ID

(69)

$1.33

Ring Terminal -16-14 Gauge - 1/4" Ring ID - Qty. 1

(69)

$1.21

Question:

Hi, I want to buy a iring kit for my 28ft flatbed trailer. I need a complete kit that includes everything I need to wire the lights and brakes. Can you recommend a couple of products that are what Im looking for? Im not sure which to buy. Thanks

asked by: Adele

Expert Reply:

Often times, people will run the wires from a 7-way such as yours to a junction box like part # 38656. From there, they will run the standard wire colors to the trailer lights, brakes and battery. I have attached a photo that shows how this setup works in the junction box. Most molded 7-way pigtails will come wired with the RV style color code. If you ever need to replace your 7-way connector in the future, you could simply open the junction box, remove the connector and wire loom and install a new, molded 7-way trailer connector.

I have attached a video showing the installation of the junction box. In this video, our installer uses a 7-way molded connector with the RV style color code like your 7-way connector. He also uses the traditional wire colors going out of the junction box to the trailer lights and brakes. He uses the appropriate lengths of 16 gauge Bonded 4 Wire, # 16-4B-1, for the trailer lights and 10 gauge Jacketed 2 Wire, # 10-2-1, for the trailer brakes and ground.

Additional hardware that you may need is 3/16 Inch Ring Terminals, # 44-5310A, 1/4 Inch Ring Terminals, # DW05702-1, 12-10 Gauge Butt Connectors, # 05732-2, 16-14 Gauge Butt Connectors, # 05731-5, and electrical tape.

For an LED light kit that comes with clearance lights and 25 feet of wiring we have the part # TLL36RK.