Troubleshooting 7-Way Trailer Connection Wiring on 2017 Nissan Frontier
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
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.
Products Referenced in This Question
T-One Vehicle Wiring Harness with 7-Way Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- No Tow Package
- 7 Round - Blade
- Plug and Lead
- Plug-In
- Visible
- Tekonsha
more information >
Curt Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In
- Accessories and Parts
- Trailer Brake Controller
- Wiring Adapter
- Plugs into Brake Controller
- Vehicle Specific
- CURT
more information >
Curt T-Connector Vehicle Wiring Harness for Factory Tow Package - 7-Way Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- No Converter
- Factory Tow Package
- 7 Round - Blade
- Plug and Lead
- Plug-In
- CURT
more information >
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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