Tekonsha T-One Vehicle Wiring Harness Installation - 2018 Nissan Pathfinder Video

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

Since you won't have the factory tow package in your 2018 Nissan Pathfinder, I recommend using the Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Connector #HM11143690. This harness plugs into your Nissan Pathfinder's…

Your 2018 Nissan Pathfinder does require a couple of blue relays to be installed to fully activate the tow package so that the turn/brake signal lights work on the trailer when connected. The relay harness on your Pathfinder gets plugged into a…

The only reason two of the lights would be blinking under normal circumstances would be if the circuits that were blinking where the left and right stop/turn signals and it was because you had the emergency flashers of your vehicle on. Otherwise that…

It could be a tow package fuse on the vehicle. Use the owners manual to find the locations of fuses/relays related to the tow package wiring to check them and replace as needed. If the issue is not a fuse or relay then you can test the vehicle side…

To check the pins on the vehicle side 7-Way, you can use a circuit tester or the volt meter. The circuit tester will show you if a signal is coming through on the pin you are testing while the volt meter will tell you that and how much voltage is…

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

If your 2016 Mercedes-Benz Sprinter 2500 came with a factory 7-way trailer connector then there should be a green connector located under the driver's seat. This green connector would then be plugged into a Mercedes-Benz speciality harness and…

All 2020 Nissan Pathfinders come from the factory prewired for a brake controller and a 7-way trailer connector, though it might lack the 7-way and the relays needed to activate the tow package. You will need a brake controller. If your vehicle…

Sounds like the trailer running light circuit is not working on your 2018 Nissan Pathfinder and you are looking for the harness that needs a relay to activate it. Trailer running lights not working with certain Nissan vehicles is a common problem…

I have attached an excerpt from the owner's manual on the Curt TriFlex Trailer Brake Controller part #C24VV which shows the setup process including the calibration.

For your 2016 Nissan Pathfinder I recommend Curt Class III trailer hitch #C13126. This hitch has a 2 inch receiver and is rated for 600 pounds tongue weight and 4,000 pounds gross trailer weight (6,000 pounds when used with weight distribution). I…