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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Powered Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # 118804
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Custom Fit Vehicle Wiring

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Tekonsha Custom Fit Vehicle Wiring - 118804
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system. 1-636-306-4830 to order Tekonsha custom fit vehicle wiring part number 118804 or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (10)
  • Q & A (0)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118804

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Powered Converter
  • Tekonsha

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.


Features:

  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly to battery to avoid overloading vehicle's electrical system
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 5 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located in the rear cargo area. You will have to remove the rear threshold plate, privacy screen, storage covers, and floor covering to access this harness.


Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.


Once installation is complete, the 4-way flat connector will be stowed in your rear cargo area.


It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.


ModuLite Powered Tail Light Converter

A ModuLite power module is built into this T-One connector. Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of your trailer. This power module functions as a tail light converter to combine the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.



118804 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118804 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118804

Average Customer Rating:  4.9 out of 5 stars   (10 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.

by:
2020 Acura RDX

Working Great! Thanks. Plug and play easy wiring other than +12VDC.

Time consuming to take apart the entire rear interior of the 2020 Acura RDX ASPEC and running the 12VDC wire to the Battery.

Very inexpensive compared to the Acura OEM offering.

Fast Delivery.

I first purchased another model (118800) that did not work. It was not clear which PN to buy. This one needs the +12VDC wire to the RDX battery to make it work.


Comments
Still working great.
James - 04/25/2021


by:

knowledgeable, courteous , fast, personal service
they help you get the right product and personally follow through even provide their call back number so you can reach the same person again
that is hard to find these days




by:
Acura RDX

Outstanding quality. Installed on Acura RDX A-Spec. Only problem was removing the four tie downs. They are held by Philips screws that were incredibly tight. Had to drill one out after stripping off head. Used air impact gun to remove others.




by:
2019 Acura RDX

When I originally ordered this I realized I made a mistake on selecting the shipping..I tried to change it but had no luck doing so. Oh well.




by:
2019 Acura RDX

Easy hookup and worked perfect!! on my 2019 Acura RDX




by:
2020 Acura RDX




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10
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See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring



  • How To See If 2019 Acura RDX Has Plus 12v Power Provision Without Removing Interior Trim Panels
    The expert reply you were looking at is correct. The only way to confirm if your 2019 Acura RDX has the plus 12 volt power provision is by removing the interior trim and seeing if the factory connector has one or two red wires. I can completely understand not wanting to do this just to see which harness will work, so I recommend just going with the Tekonsha # 118804 as it will work with or without this provision due to this harness requiring you to run a power wire to the positive post...
    view full answer...
  • How to Determine Correct Trailer Wiring Harness for 2020 Acura RDX
    In order to determine the correct trailer wiring harness for your 2020 Acura RDX - the option for +12-Volt Power Provision or without - you can check out the 8-pin connector on the driver's side interior trim panel, like in the accompanying photo. To see how to access this you can take a look below at the linked installation instructions. Once you see the 8-pin connector, check to see the number of red wires going INTO the connector. - Two Red Wires - With +12-Volt Power Provision: T-One...
    view full answer...
    Image 1 for
  • Is Installing Trailer Hitch on 2019 Acura RDX Difficult
    The Draw Tite hitch # 76268 that you referenced that fits your 2019 Acura RDX is not a difficult hitch install at all. You'll have to temporarily lower the exhaust (easier than it sounds) as well as the rear spare but overall it would be no problem for someone with basic mechanical skills and tools. No cutting is required. The trailer wiring harness # 118804 for your RDX is also easier to install as well.
    view full answer...
  • Why Does Tekonsha T-One Connector 118800 Not Match Wire Layout Of Connector In 2019 Acura RDX?
    Thanks for the pictures! Since the connector on your 2019 Acura RDX only has 1 red wire, your vehicle does not have the plus 12v power provision meaning the Tekonsha # 118800 is not the correct harness as it is designed for vehicles with the plus 12v power provision. Moving the wire on the connector is not recommended as it will void the warranty of the harness. Instead you will need to use the Tekonsha # 118804 which is the correct harness for your RDX without the plus 12v power provision. I...
    view full answer...
    Image 1 for Image 2 for
  • How to Determine Which 4-Way Trailer Wiring Harness Is Needed On a 2022 Acura RDX?
    To determine if your 2022 Acura RDX has the 12-Volt Power Provision you will need to access the 8-pin connector inside your Acura to see if it has 2 red wires in the factory side of the connector. This connector is located on the drivers side above the rear portion on the rear fender(see image). If you only have one wire you do not have the provision and will need the Tekonsha T-One Vehicle Wiring Harness # 118804. If your connector has 2 red wires you do have the provision and will...
    view full answer...
    Image 1 for
  • Class III Trailer Hitch Recommendation for 2019 Acura RDX
    For your 2019 Acura RDX we have a Class III hitch with a 2 inch opening with part # 76268. Then for trailer wiring you'd want the part # 118804 which installs easily and is very reliable. 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 a storage bag. If...
    view full answer...
  • Best Trailer Hitch Receiver For 2020 Acura RDX
    The best trailer hitch receiver for your 2020 Acura RDX is the Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # 76268 as it has a 350lb tongue weight rating and 3500lb trailer weight rating making it perfect for a bike rack, cargo carrier, or even a ball mount for towing, and does not require any trimming to the fascia on your vehicle. With that said if you have a spare tire with a wheel larger than 18" you will need to remove it and purchase a compact spare from...
    view full answer...
  • Recommended Trailer Hitch Receiver and 4-Way Wiring Harness For Towing Trailer With a 2021 Acura RDX
    For your 2021 Acura RDX I recommend the Curt Trailer Hitch Receiver # C95CR. This is a class III 2" receiver that will allow you to have more options for your hitch mounted accessories such as bike racks and cargo carriers. The receiver attaches to factory weld nuts that you already have in your frame. The Tekonsha T-One Vehicle Wiring Harness # 118800 will allow you to connect to the factory wiring on models with the with plus 12-volt Power Provision. If you do not have the 12-volt provision...
    view full answer...
  • Curt Hitch and Identifying the 12 Volt Power Provision in a 2021 Acura RDX
    I have an explanation for your 12 volt power precision concern and a great hitch for your 2021 Acura RDX In order to determine the correct trailer wiring harness for your 2021 Acura RDX - the option for +12-Volt Power Provision or without - you can check out the 8-pin connector on the driver's side interior trim panel. I have attached a photo to help you. I have also linked some installation instructions. Once you see the 8-pin connector, check to see the number of red wires going INTO...
    view full answer...
    Image 1 for
  • Trailer Hitch and Towing Accessory Recommendations for 2020 Acura RDX
    We do indeed offer a 2 inch receiver hitch for the 2020 Acura RDX, the Draw-Tite # 76268. This hitch is compatible with your vehicle, but in order for the spare tire to remain in its original position under the vehicle after the hitch is installed, the spare tire must be on an 18 inch or smaller wheel. The hitch includes all the needed installation hardware, but if you'll be towing with the hitch, you'll need a wiring harness, a ball mount and a trailer ball. For the harness, use # 118804...
    view full answer...
  • Does Curt Trailer Hitch Receiver Fit 2020 Acura RDX With Spare Tire?
    Yes, the Curt Trailer Hitch Receiver # C95CR will fit your 2020 Acura RDX that has the factory temporary spare tire. You will want to install one of 2 wiring harnesses for your RDX. You will first need to remove your drivers side rear trim panel to determine which kit you will need. There is a empty 8-pin connector on your wiring harness(see picture). If the connector has 2 red wires you will need the Tekonsha Wiring Harness # 118800 If there is only 1 red wire you will need Tekonsha...
    view full answer...
    Image 1 for
  • Weight Capacity With Curt Trailer Hitch Receiver C95CR On a 2020 Acura RDX
    The ratings on the Curt Trailer Hitch Receiver # C95CR are the weights that Curt built the receiver to be capable of supporting. You will want to verify with an Acura dealer exactly how much weight your 2020 RDX is capable of supporting. The limiting factor may be part of the drivetrain or the frame capacity and not the factory 1-1/4" receiver. You may need to use a small Utility Trailer # K2MMT4X6 if they say your RDX cannot support that much tongue weight. A 4-way harness will be needed...
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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