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

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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).

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Answer 1

With the Pack'Em Single Trimmer Rack #PK-6S I would recommend having the motor of the trimmer facing the front of the trailer. The motor side mount fully latches around the trimmer whereas the other side requires you to angle the trimmer in to…

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Answer 2

The Pack'Em Trimmer Rack part #PK-6S installs directly on the trailer's side rail (see photo 1). The Pack'Em Expansion Pack part #PK-OP1 installs on a set of uprights like the Pack'EmTower Kit for Pack'Em Racks part #PK-BM (see…

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Answer 3

You'd have to install the other PackEm Trimmer Rack - Open Utility Trailers - 1 Trimmer Item #PK-6S on the other side of your trailer but once installed you'd be able to carry two trimmers.

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Answer 4

Hey Edward, unfortunately mounting hardware is not included with the Pack'Em Trimmer Rack for Utility Trailers #PK-6S but you should be able to get that at any local hardware store. The grade 8 bolts, nuts, and washers is what I'd get, a lock…

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Answer 5

Hey Edwin, this is a known issue with certain Nissan models. A lot of times there will be some wiring already in place but no relays. The Tekonsha #118266 comes with the necessary relays as well as the 7-way plug but sometimes there still is a…

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Answer 6

The auxiliary 12-volt wire that runs from the 7-way connection to 7-way trailer plug will supply 12-volt power from the vehicle to the trailer. The 12 -volt power will allow interior or exterior lights to run that are not wired in to the…

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Answer 7

Trailer running lights not working with certain Nissan vehicles is a common problem with an easy fix. There is a relay for the trailer running light circuit that is located in the fuse box (in the cab). If that relay is missing or no longer functions…

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Answer 8

On certain Nissan vehicles like yours an additional blue relay is sometimes needed to activate the trailer running lights circuit. This appears to be the case with your 2018 Nissan Frontier since this circuit isn't active. This is a very common…

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Answer 9

This is actually a fairly common issue with certain Nissan vehicles but it should be a simple fix. It sounds like the relay for the trailer running light circuit is either missing or needs to be replaced. This relay should be located behind the…

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Answer 10

Yes. The Buyers Products Spring Latch - 3" Long x 1-3/4" Wide - Zinc Plated #BP34FR can be used as a left hand or right hand latch all the same.

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Answer 11

The only pin that should be continuously showing 12V power on the 7-Way connector on your vehicle is the 12V power circuit which is normally the black wire but not always. In 7-way wiring the 12V auxiliary power feed is carried on the contact at the…

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Answer 12

On a 7-Way connector the suggested minimum wire gauge for the White (ground) wire, the Red or Black (power) wire, and the Blue (brake power) wire is 12 gauge. The minimum wire gauge for the remaining Green (right turn/brake) wire, the Yellow (left…

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Troubleshooting 7-Way Trailer Connection Wiring on 2017 Nissan Frontier

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