Installing 7-Way Trailer Plug on Trailer with Electric Brakes

Updated 02/09/2015 | Published 02/07/2015

Products Featured in This Question

7-Way Molded Trailer Wire Connector, 6' Long

(389)

$45.60

Dielectric Grease for Electrical Connectors, 2 oz.

(1481)

$10.94

Trailer Wiring Junction Box

(821)

$31.98

Hopkins 6-Way Connector with Jacketed Cable - Trailer End - 8' Long

(46)

$44.33

Hopkins 7-Way Molded Trailer Wire Connector - 11' Long

(187)

$58.27

Question:

Hello, I have a trailer that I need a new wiring harness for. It needs to be one that will run electric brakes. The vehicle that I pull the trailer with is a Chevy 3500. Do you have any recommendations for a wiring harness?

asked by: Chad B

Helpful Expert Reply:

I recommend the Hopkins 7-way molded trailer wire connector # H20044. It will measure 6-feet long and provide you the functions required for your electric brakes. If you prefer a longer connector, the same item is available in an 8 foot length as part # H20036 or an 11 foot length as part # HM20048.

Please note that the color codes on these molded connectors are different from those usually found on a trailer. The wiring code is on each of the product pages.

If you don't have some already, I highly recommend using dielectric grease part # 11755 to help prevent corrosion from water exposure.

A junction box such as # 38656 would be worth getting because it will provide an easy way to connect the wires from your trailer connector to the wiring.

I've added a few videos and a helpful article for you too.