Trailer Wiring Harness for 2012 Nissan Frontier Without Trailer Hitch

Question

Question:

Bought the truck used and had no hitch. Called Nissan Dealer and asked if the SV was wired for towing and he told me yes so I ordered the hitch and harness 118263 from you and installed them this morning. No tail lights on the trailer and only power to left brake and left signal light. All others no lights. Did I make a mistake by not ordering the C56225 kit or the 57000 kit? I am totally confused! I have an RV and cant even tow it!! If I order the C56225 I will have two 118263 harnesses of which I dont need. Help!

asked by: Dennis M

0

Expert Reply:

If your truck did not come with a trailer hitch or wiring harness from the factory and you only need a 4-way flat trailer connector, then you would need the Curt T-Connector Wiring Harness, # C56225, as you pointed out. The additional relay harness is required to supply power for the tail lights. The relay for the right turn signal and brake light is located under the hood on the passenger side in a relay box.

It is possible that Nissan did not include the relay since the truck did not come with a factory tow package. You should see a single blue relay like the one in our Curt Relay Kit # C57000. The relay for the right turn signal and brake light is in the far-right slot closest to the windshield. If that is empty, then you will need a relay. If it is there, then you can test it by replacing it with the relay for the left-hand turn signal and brake in the far-left slot closest to the passenger side headlight. Your left turn signal will no longer work, but if the right turn signal starts to work, then we know it is a bad relay.

If you purchase part # C56225, then you will have two 4-way connector harnesses. Unfortunately, the relay harness is not available separately from either of the manufacturers. You could certainly return part # 118263 and purchase # C56225 so you do not end up with a harness that you can't use.

We also offer a 7-way trailer connector wiring harness for your Frontier as part # 118266. I have attached installation videos of both wiring harness for you to check out.

expert reply by: John H

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Answer 1

There are some Nissan vehicles that require an additional relay from a Nissan dealer to make everything fully functional. However if you have found all the relays in the proper places and have installed the relays in wiring harness #C65225 as…

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Answer 2

If your 2014 Nissan Xterra PRO4X did not come with a factory tow package then Curt wiring harness #C55441 will not work. It is designed for models that came with a factory tow package. For models without a tow package you would use #C56225. I have…

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Answer 3

On the 2010 Nissan Frontier, if the vehicle did not come with a factory tow package it will not have a functioning wiring harness even if the Tow Ready Wiring Harness, part #118263, is added. There will be relays that will need to be inserted to make…

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Answer 4

The relays you need for your 2012 Nissan Frontier are part #C57000. This relay kit includes the large brown relay which activates the 12-volt power circuit, and the smaller blue relays which activate the turn signals. I have linked you to the…

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Answer 5

One way would be to check the original window sticker for the vehicle for the tow package being listed. Other way would be to take the VIN to a Nissan dealer and have them run it to find out. If you do not have any factory trailer wiring currently…

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Answer 6

For a 2014 Nissan Xterra you can use wiring harness #C56225, which you have referenced. This is the correct harness for an Xterra that did not come with a factory 4-Way or 7-Way trailer connector. The relays will be needed for the activation of the…

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Answer 7

I am glad to help you get your 2011 Frontier ready for towing with a hitch, wiring and brake controller. Instead of Curt hitch #13241 I recommend the Draw-Tite #75282 since it offers a higher tongue weight (TW) capacity (of 750-lbs versus 500-lbs for…

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Answer 8

At this time we do not have the relays and wiring connector sold separately for the Curt T-Connector Vehicle Wiring Harness #C56225. This part is required for the 4-way flat trailer connector to function if your 2007 Nissan Xterra came from the…

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Answer 9

Trailer wiring harness #118263 is designed to fit as a replace if your 2006 Nissan Frontier came with a factory 4-Way. If you added it without the factory tow package then it would not be functional or fully functional. You would instead need…

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Answer 10

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…

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Answer 11

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…

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Answer 12

Yes, we do. To add a hitch to your 2024 Toyota Grand Highlander, I recommend the Curt Trailer Hitch item #C26VV. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a…

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