Troubleshooting 7-Way Trailer Connection Wiring on 2017 Nissan Frontier

Question

Question:

I recently installed a Curt brake controller and 7 way plug on my 2017 Nissan Frontier. When the vehicle is started pin #2trailer brakes is presenting 14.52 volts which locks the trailer brakes. I did reuse the relays from the 4-way flat connector that I had previously installed.

asked by: David S

0

Expert Reply:

In your 2017 Nissan Frontier, the Curt brake controller should be installed using the custom wiring adapter # C51382. This should work correctly to give you the proper wiring within your cab. Then you will use the Curt # C56226 or the Tekonsha # 118266 to get the correct 7-way. If you have done this even using the previous relays, check your trailer connection for functions using the attached photo and a circuit tester like # PTW2993.

It sounds like the trailer may be mis-wired and needs to be tested if the 7-way on your vehicle is correct. I've attached a photo to assist with this and have attached an article to assist as well. You can test the trailer wiring using a battery to connect the negative terminal to ground and then positive to test each function.

Let me know if you need further troubleshooting assistance.

expert reply by: Jason S

0

click to enlarge

Jaime M.

5/24/2020

Hi I recently purchased a Curt triflex and installed it in my 2018 Nissan Frontier and all I am getting is a flashing 2.0. I’ve checked and reconnect every wire and trailer wire and it’s still remains flashing with no brakes. Please help

Reply

Chris R.

5/27/2020

I would check the 7-Way connectors (both on the Frontier and trailer) and look for any corrosion or debris built up inside the pins, cleaning out as needed. Sometimes corrosion can cause the brake controller to sense a constant power draw, which could be what's causing the "2.0" to flash at all times. You can also try to simply unplug the Triflex from power, let it sit a bit, and and then plug it back in to reset it. Let me know what you find and we can go from there (if needed).

Reply

Answer 1

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…

view full answer...

Answer 2

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…

view full answer...

Answer 3

The best brake controller option to go with is one that activates the brakes proportionally instead of time delayed. A proportional brake controller will activate the trailer brakes at the same time and with the same intensity as the tow vehicle…

view full answer...

Answer 4

From what I can find on the 2022 Nissan Frontier, the plug for the brake controller that will let you use a harness like the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers #3050-P is located just above the OBD connector, taped tight…

view full answer...

Answer 5

We have not had the opportunity to do a brake controller installation on a 2023 Nissan Frontier yet. But if the plug is located in the same place as the 2022 model year, then the plug will be tucked behind the kick plate located to the left of the…

view full answer...

Answer 6

The first thing you will need for your 1999 D250 is a 4-way. The Curt T-Connector Vehicle Wiring Harness #C55317 plugs into the connection points behind your rear bumper and will allow you to power your trailer's signal lights. Once the 4-way is…

view full answer...

Answer 7

For your 2024 Nissan Frontier I recommend the Redarc Tow-Pro Liberty Brake Controller #RED24FR. I like the Liberty because it is simple, reliable, and looks great in any vehicle. The main unit installs behind the dash, so only the control knob will…

view full answer...

Answer 8

For your 2024 Hyunda Santa Cruz we have the Curt 7-way kit part #C68JR that is a confirmed fit. This installs by plugging into a factory wiring connector on your vehicle which means a really easy install that doesn't require any splicing.

view full answer...

Answer 9

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

view full answer...

Answer 10

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

view full answer...

Answer 11

From what I could find, it looks like the plug for a trailer brake controller on your 2023 Nissan Frontier is located in the same location as the 2022 model year. That is behind the side panel by the OBD connector and is likely pushed back into the…

view full answer...

Answer 12

In order to actuate the trailer brakes, you'd need a brake controller installed in the vehicle and a 6 or 7-way trailer connector. A 4 pole flat wiring harness like the #18002 you'd looked at carries 4 circuits- right turn/brake lamp, left…

view full answer...

Troubleshooting 7-Way Trailer Connection Wiring on 2017 Nissan Frontier

Products Referenced in This Question

Product Page this Question was Asked From

Featured Help Information

Instructions

Miscellaneous Media

Continue Researching