Installing 4-Pole/7-Way Trailer Connector on 2020 Toyota Tacoma

Updated 04/28/2021 | Published 04/27/2021

Products Featured in This Question

Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(30)

$94.27

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

(466)

$30.59

7-Way to 4-Way/5-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs

(147)

$24.94

Question:

I need to hook up a trailor lights on my truck my truck already has an oblong hole for a light plugin but I am having trouble finding one that has a four wire flat and a seven wire round plugin can you help

asked by: Nathaniel L

Expert Reply:

We don't offer a 7-way trailer connector that would plug into the connector you mention, but we do have an option that would provide you with a 7-way and a connector for a brake controller. I'd recommend the Tekonsha # 22117 which would plug inline at the connection between the vehicle's taillight wiring harnesses and the taillight assemblies.

As outlined in the linked installation instructions, you'll run the body harness to the front to connect at the battery power and ground, with a portion of the harness being routed through the firewall under the dash. The plug included is compatible with Tekonsha brake controllers, I'd recommend using the Tekonsha Primus, part # TK90160.

For a 4 pole, you can simply use an adapter like # C35FR, or you could use # 118384 which plugs inline at the connection between the # 22117 and the 7-way.

I've linked to a video showing how the Primus brake controller works.

expert reply by: Mike L