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  1. Custom Fit Vehicle Wiring
  2. CURT
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
1988 Ford Aerostar
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CURT

Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Part Number: C55361
In Stock
$49.11
Retail:$76.99
You Save: 36%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

1988 Ford Aerostar

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance. 1-800-940-8924 to order CURT custom fit vehicle wiring part number C55361 or order online at etrailer.com. Free expert support on all CURT products. Great prices and Fastest Shipping for Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (27)
  • Q & A (0)
  • Videos (1)
  • Photos

CURT Custom Fit Vehicle Wiring - C55361

Highlights

  • Custom Fit for Your Vehicle: Works with your vehicle's wiring
  • Plug-and-Play Install: T-connector plugs inline with factory wiring—no cutting required.
  • Ready to Tow: 4-way flat connector powers trailer stop, turn, and tail lights.
  • Long Reach Harness: Cable length allows mounting at the hitch when towing.
  • Protected Wiring: Keeping plug inside vehicle when not in use helps prevent corrosion.
  • Reliable Signal Converter: Built-in converter ensures correct trailer light functions.

Features to know about

Installs Fast Without Splicing: Plug-In T-Connector Harness

Getting trailer lights working doesn’t have to mean cutting into factory wires. The Curt T-Connector plugs in line with the existing tail light wiring to give you a clean 4-flat trailer connector. It’s all plug-and-play, so you can have a fully functional lighting setup without any wire splicing or guesswork.

Keeps Wiring Protected When Not in Use: Interior Mount Storage Option

The 4-pole lead is long enough to route out to a hitch-mounted bracket when you’re towing, but it can also stay stored inside the vehicle between trips. Keeping the connector tucked away guards it from moisture, road salt, and grime—helping prevent corrosion and saving you from lighting issues later on.

Built-In Converter for Reliable Signal Output: Prevents Power Bleed and Reverse Light Issues

This harness includes an integrated converter that separates the vehicle wiring from the trailer system. It avoids the small power bleed that can dimly light LED bulbs on some setups and helps ensure clean signal transfer for running lights, turn signals, and brake lights.

Standard 4-Flat Connector for Core Trailer Functions

The 4-flat connection provides the basics—running lights, left and right turn signals, and brake lights—so your trailer stays visible and legal on the road. It’s compatible with most light-duty trailers and works seamlessly with typical hitch brackets for a tidy installation.

Specs

  • Product Overview: Comparison diagram showing Curt T-Connector vehicle wiring harnesses with connectors, converter boxes, and labeled wiring leads for trailer hitch applications

55361 CURT T-Connector - Surface Mount Technology - 4 Wire

Similar to Tekonsha 118361 and Hopkins HM43565

Installation Details C55361 Installation instructions

This Product Fits The Following Vehicles




Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of CURT Custom Fit Vehicle Wiring - Trailer Hitch Wiring - C55361

Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at the CURT T-connector vehicle wiring harness with the four-way flat trailer connector. Now, this is a custom fit part. It is designed to fit the 1997 to 2003 Infiniti QX4, fits the 1996 to 2004 Nissan Pathfinder, and the 1998 to 2001 Nissan Altima. And on a custom fit part like this, I do like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show if this will work for your application. Now, this kit here provides this four-way flat trailer connector at the back of your vehicle to power your trailer signal lights.

It is compatible with five pole, six pole, and seven-pole adapters that we do so separately. And this does connect very quickly and easily. There's no cutting or splicing of wires. All you have to do is locate your connection points, which will be behind the taillight housing. Plug in these connectors here, one on each side, and then ground your white wire here that's on the driver's side to a close nearby ground.

Now, it does include this black box. This is the taillight converter and this is to ensure that your vehicle's wire will match that of your trailer. This is a powered module, connects directly to the battery to avoid overloading your vehicle's electrical system. And this is constructed using SMT technology, which is surface-mount technology. Gives you more consistent, reliable performance and it'll maximize your trailer light yield and intensity while producing minimal heat.

Also ensures superior operation in rough road conditions. Few specs on this harness, the maximum amperage for the stop and turn lights is three amps per circuit. For the taillights, six amps per circuit. And it does come with everything laid out here on the table. Comes with a nice set of instructions that'll show you where your connection points are.

But basically what you do again is go to the rear of the vehicle, get access to behind the taillight housings, and you'll start on the driver's side. Take the one with the yellow wire in it and you'll connect that to the behind the taillight housing. And then you'll take this one with the green wire and this is a length of wire that'll run over to the passenger side, plug in behind the passenger side taillight. And we mentioned this white wire with the eyelid on it, that's for to connect to a ground. So if there's a nearby ground, you can connect it. If not, they do include a grounding screw that you can make your own ground. And then this converter box does have a little weight to it, so don't want it bouncing around. You can attach it to a nice flat surface with the included double face tape to attach it down. They do give you some extra cable ties to take up any slack in the wiring. And then you run your four-way out to the back to plug into your trailer. Now, if you're not plugged into your trailer, it does include this dust cover that you can attach to this plug, and you can leave it attached if you want. But when you're not plugged in, all you have to do is put it onto the connectors just like that and it'll protect those terminals from the elements or from any damage when you're not plugged in. But that should do it for a look at this CURT T-connector vehicle wiring harness with the four-way flat trailer connector.

Customer Satisfaction Score:

Ratings & Reviews

5.0

27 reviews
Review sort icon
Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.

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Excelente



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Fits well, no problems



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Sent with another order and was easy to install. Very Pleased!

Robert R., Fremont, CA



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Great product, reasonable price and fast delivery; what else can you ask for?



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I have an old 2002 Pathfinder. The video was a tremendous help and it was easy to install. Good job.



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great quality works flawlessly one year latter looks like new



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It works great. Easy installation had it hooked up in less than 5 mins



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paper instructions were way to vague for me to follow. The video instructions were spot on and easy/quick to install. And it works!



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Great and easy combination to go with h itch!!



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I could not believe how quickly I received my order. I order online all the time, this was the quickest turn around I've experienced. Order was complete and I'm exstatic.



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Very easy installation. Service was quick and the quality of the product was impressive. I had it installed in about 30 minutes!



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Installation was a breeze. Loved how easy it was to find what I need on the site. Shipping was cheap too.

Product helped me connect my trailer lights!



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THANK YOU ETRAILER! WENT THROUGH ANOTHER SITE AND WAS SENT AN INCORRECT PRODUCT. A hassle to return and even harder to get a reply from the company. Thank you for your great customer service! You are highly recommended and I will order from you in the future for all accessories needed for my truck. Thanks again!



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I was told about etrailer from an acquaintance. He said your prices were the best and your customer service was outstanding. After placing my order and receiving my products I have to say, I agree with him 100%! Ordered my items on Friday receive them on Monday... Good quality, fast delivery, fair price what else can I say! I will definitely refer etrailer and use your company in the future.



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Perfect fit, quick shipping, and performance is as advertised. It’s been dunked in salt water countless times, and works just fine on my 2001 Nissan Pathfinder.



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This wire harness gave me no troubles. Just plugged straight into my tail light plugs and did not short me on wire. The trailer lights plug is perfect length.



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Works like it’s supposed to. Good instructions. Transaction easy, shipping quick.



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I wish that the instructions had been a bit more clear. Install was easy once figured out. Fair price.


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See what our Experts say about this CURT Custom Fit Vehicle Wiring

  • Everything Needed to Tow a Travel Trailer with a 2003 Infiniti QX4
    The first thing you need to do is consult the owners manual for your 2003 Inifinity QX4 and determine if your vehicle has the capacity to tow the weight of your trailer. The Class 3 hitches we have available for your 2003 Inifiniti QX4 like the Curt Hitch Part # 13088 have a 6,000 lb capacity when used with weight distribution. Which you need to consider the weight of your trailer when it is full loaded and ready to tow. You may find that you are above this capacity when you have all your...
    view full answer...
  • Trailer Wiring Harness Blows Fuses and Turns On Reverse Lights on a 2002 Nissan Pathfinder
    I do not recommend Curt powered trailer wiring harnesses for LED taillights because some of the battery power bleeds through and can dimly light up LED bulbs. Harness # C55361 should not have that issue since it does not have a direct connection to the vehicle battery. The harness you are using now, # 118361, might not be the problem and it is possible that if the harness is not the problem that when you install a new one the same thing will happen. It almost sounds like there is a bent...
    view full answer...
  • Recommended Wiring Harness for a 2001 Nissan Pathfinder and Prodigy P3 Brake Controller
    On your 2001 Nissan Pathfinder, there are not wires pre-run for you to utilize for a brake controller. There is not a custom wiring harness for the 2001 Pathfinder available as none of the models in that year came with a factory tow package wiring. The Tekonsha Prodigy P3 # 90195 is a great option for your brake controller. You will need to use the Universal Brake Controller Wiring Kit # ETBC7 to connect your 4-way harness # C55361 to your P3 brake controller. This kit will work extremely...
    view full answer...
  • Curt Trailer Hitch and Wiring Fit for a 1997 Nissan Pathfinder
    The Curt hitch part # 13088 that you mentioned is a fit for your 1997 Nissan Pathfinder and would work well for you. For trailer wiring you would then want the Curt harness part # C55361 that is also a fit. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and...
    view full answer...
  • How to Permanently Mount Curt 4-Pole Harness Connector C55361 on Hitch on 2001 Nissan Pathfinder
    The 4-pole wiring on Curt T-Connector Harness # C55361 is long enough to reach a hitch-mounted bracket like # 18144. But there is a benefit to keeping the wiring protected inside your Pathfinder except for the times when you actually need it for your trailer. The worst enemy of trailer wiring is corrosion, which can be caused by exposure to moisture, salt and other contaminants. Keeping that 4-pole safe inside the vehicle when not in use can help prolong its working lifespan and spare...
    view full answer...


Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Isabelle B
Updated by:
Isabelle B

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