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

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

Item # 118647

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Custom Fit Vehicle Wiring

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118647 - Powered Converter Tekonsha Trailer Hitch Wiring
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  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • Tekonsha
  • Powered Converter
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. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118647 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.


  • All Info
  • Reviews (3)
  • Q & A (17)
  • Videos (1)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118647

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 trunk
    • Plug in T-connectors
    • 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: 2.1 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 inside your trunk, behind the tail lights on both the driver's side and passenger's side. You will need to remove the rear threshold panel and push back the felt liner to access the harness.


T-One Connection Location Points Behind Tail Lights

Once you've plugged in the T-connector, run the hot lead with the attached fuse holder to the car battery. 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 the driver's-side storage compartment in your trunk when not in use.


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.



118647 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite



118647 Installation InstructionsInstallation Details 118647 Installation instructions

This Product Fits The Following Vehicles

2015 - 2017 Volvo V60

2016 - 2018 Volvo V60

2015 - 2015 Volvo V60 Mid-Year Model



California residents: click here


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


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




Video Transcript for Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118647 Review

Today we're going to review part number 118647. This is the tow ready T-1 vehicle wiring harness with the four way flat trailer connector. Now this part is a custom fit part. It is designed to fit the Volvo V60 models starting in 2015. On any custom fit part number, what I like to recommend is to go to our website, use our fit guide, put in your year and model vehicle, and it'll show you if this will work for your application. Now this part does provide this four way flat trailer connector to back your vehicle to power your trailer's signal light. It does connect quickly and easily using these plug in T connectors right here.

Basically, these will plug in usually behind your taillights in your rear cargo area. Now it does include this module light. This is to ensure that your vehicle's wiring will match that of your trailer. This is a powered module which connects directly to the battery. This black wire would run up to your battery in the front of your vehicle. This is to avoid overloading your vehicle's electrical system.

Everything will run through this module light and this wiring. On the wiring with the four way attached that would run out the back of your vehicle, it is constructed of a nice sixteen gauge bonded wire to protect. If you notice, it comes with this integrated dust cap so when you're not connected to your trailer, you can just put your dust cap on. With your dust cap on, you can see that it'll protect those terminals from the elements and from any damage. This part does come with everything shown here on the table. It even comes here with a nice set of detailed instructions to help you install it with even pictures to show you where the connection points are. I'm going to go over this in a minute where all these parts go. First, I want to give you some specs on this wiring harness.

The maximum amperage on the stop and turn light circuit for this harness is two point one amps per circuit, and on the taillight is seven point five amps. When you go to install this, what you'll want to do is go to the rear of your vehicle and again access the back of your taillights. What you'll do is you'll start on the driver's side. This yellow wire with the T connector, this is for the driver's side connection. What you'll do is unplug your taillights and just plug these in between the connection points. Then the longer green wire with the T connector, that's for your passenger's side.

You'll run this all the way across to your passenger's side. Same way. Unplug the taillight to plug this in between the connection points on the passenger's side. Then again, this bonded wire with the four way on it, this will run out the back of the vehicle. If you're not using it, you can just store it in the back of the vehicle. Your last two connections are this black wire and the white wire. Now if you notice, the white wire has an eyelet on it. This is for the good, clean ground. In other words, find a spot where you can attach this to a good, clean ground. If there isn't one available, they do include this grounding screw that you can make your own ground. Then your last wire is this power wire. Again, this will need to be run to the front of the vehicle where your battery is. They give you this length of wire, about twenty feet of it, and these butt connectors. What you'll do is put a butt connector on the power wire, connect it to this length of wire, and then run this length of wire all the way to the front. You can use these cable ties to take up any wire, keep it from hanging down. You've got your other end up by the battery. Before you connect it to the battery, what you'll want to do is connect it to this inline fuse holder first. You'll take the other butt connector, put it on the end there, take your fuse holder, one end will connect to there, just like that. Then with that all connected, you'll have this one length of wire left, and when you go to connect this to the battery, they include this eyelet connector. Just attach that. Connect it to the positive post of your battery. Before you're ready to go, you've got a fuse you want to install right here. They include this fifteen amp fuse that you just push into the fuse holder. Put your cap over it. Then your system would be all ready to go with everything connected. Then just plug in your trailer to your four way at the back of your vehicle, and it'll supply the lights on your trailer. That should do it for the review on part number 118647, the tow ready T-1 vehicle wiring harness with the four way flat trailer connector. .


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118647

Average Customer Rating:  5.0 out of 5 stars   (3 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.

- 118647
by:
Volvo V60

Product works as advertised. The install was a challenge. Don't waste an evening trying to run the power wire inside your V60 and out through the firewall. The engine compartment is too tight. The conveniently located plug located under the the dashboard on the drivers side is behind the battery box and cabin filter. Just run it up the outside and go do something fun. 296211



- 118647
by:
2016 Volvo V60

Good product, easy to install. No need to run power to front of car, as Volvo has a fuse box underneath floor in rear. Just wired power there. 600150



- 118647
by:
2015 Volvo V60

Easy install. Works great. 570374


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

Do you have a question about this Custom Fit Vehicle Wiring?


  • Recommended Trailer Hitch and Wiring for 2018 Volvo V60 R Design
  • Starting with the trailer hitch I recommend the Draw-Tite Class III Max Frame Receiver Hitch # 75916, which is confirmed to fit the R Design edition of your 2018 Volvo V60, because it is the highest rated unit available for your vehicle. This will provide you with a 2 inch receiver opening, will use existing holes in the Volvo's frame for a no-drill installation, and features a clean hidden-crosstube design where only the receiver will be visible (see attached photo). I have attached...
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  • Trailer Hitch Recommendation for 2018 Volvo V60
  • Yes, the Draw Tite hitch part # 75916 that you referenced is a confirmed fit for your 2018 Volvo V60 and would work well. This is a 2 inch hitch like you said you wanted as well. For trailer wiring you'd then want the part # 118647. 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,...
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  • Recommended Trailer Wiring for a 2016 Volvo V60
  • To add a 4-Pole connector to your 2016 Volvo V60 I recommend going with the Tekonsha T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118647 because we have found Tekonsha to have the most reliable electronics. This kit will simply T into the tail lights on your V60. You will also need to run the included Black wire up to your battery for power. This will keep the lights on your trailer from affecting the lights on your V60. I was able to look up and see that the...
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  • Recommended Trailer Hitch and Towing Setup for a 2015 Volvo V60 Towing an 18 Foot Boat
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  • Availability of Trailer Wiring Harness for 2015 Volvo V60 Sports Wagon
  • We do offer two choices in a 4-pole wiring harness for the mid-year model of the 2015 Volvo V60. Curt offers their # C56287 harness and Tow Ready offers their # 118647, both of which are custom-fit harnesses that plug in at your V60 taillights. A video for the Tow Ready is linked for you. I also linked a wiring help article that will make your install easier. We do also have trailer hitch receivers for your V60. The link at right will let you see all options, which include both 1-1/4-inch...
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  • The Curt Trailer Hitch Receiver # 13266 that fits your 2018 Volvo V60 has a 34 lb shipping weight. This is a Class III, 2 inch hitch with a 3,500 lb towing capacity and 350 lb tongue weight capacity. It has a black powder coat for rust resistance, is made in the USA and comes with a lifetime warranty. To add wiring which will give you a 4-way connector and allow you to power your trailer's lights you need Wiring Harness # 118647. It is also recommended you use Dielectric Grease for Electrical...
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  • Installation Instructions for 118647 Harness for 2015 Volvo V60 CrossCountry
  • I attached a link to the installation instructions for the Tow Ready wiring harness part # 118647 that you referenced.
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  • For your mid-year 2015 Volvo V60 you would want the Curt Hitch part # 75916. 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 the ball mount kit does not include a ball mount with the right rise or drop to tow the trailer level, check...
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  • Availability of Trailer Wiring Harness for 2015 Volvo S60
  • Currently, there isn't a plug and play trailer wiring option for your 2015 Volvo S60. You'd need to go with a hardwired option like the Tow Ready # 119190KIT. I've checked with Tow Ready, and they confirm the recommendation. I've linked you to an install video showing the harness being installed on an older XC90. The specific procedure would be different on your vehicle, but the procedure for testing to identify which circuit carries which function would be the same. The # 118647...
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  • Trailer Hitch Recommendation for a 2015 Volvo V60 Cross Country
  • Yes, the Draw-Tite Max-Frame trailer hitch receiver # 75916 will fit your 2015 Volvo V60 Cross Country. In order to complete the installation, fascia trimming is required and underbody panel will need to be temporarily removed. Great thing is that no drilling is required. If you plan on towing, you will need trailer wiring # 118647 but if your model was built prior to the mid year update, you will need to contact your local Volvo dealership for wiring harness information. For a...
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  • Will the Draw-Tite Max-Frame Trailer Hitch fit a 2015 Volvo V60 Cross Country
  • Thanks for sending a picture! It certainly helps. Yes, the Draw-Tite Max-Frame trailer hitch receiver # 75916 will fit your 2015 Volvo V60 Cross Country. If you have a 2016 model, it hasn't been tested yet. In order to complete the installation, fascia trimming is required and underbody panel will need to be temporarily removed. Great thing is that no drilling is required. If you plan on towing, you will need trailer wiring # 118647 but if your model was built prior to the mid year...
    view full answer...

  • 2015 Volvo V60 Trailer Hitch Recommendation
  • Yes, for your 2015 Volvo V60 we have the Draw Tite trailer hitch part # 75916 which is a confirmed fit and would work well. For trailer wiring you'd then want the part # 118647. 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 the ball...
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  • The best way to run the wires for a brake controller through the firewall on your 2016 Volvo V60 is to look for the large rubber grommet that feeds the wiring harness from the cab into the engine bay. This harness/grommet is usually located by the intermediate steering shaft but could be elsewhere. Basically, once you find the harness you will want to poke a hole in the rubber grommet and feed the wires through with some sort of leader. Unfortunately, we don't have a video of this as we...
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  • In the installation instructions for the Draw-Tite Max-Frame Trailer Hitch Receiver, part # 75916 the impact beam is removed in step 3. It is then re-installed in step 8, so you do not have to worry about the trailer hitch and the amount of damage that would occur with it removed. The # 75916 is a Class lll hitch and it has a 2-inch receiver opening. If you plan on doing some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with...
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  • Can I Tow with my 2019 Volvo V60 with Class 2 Hitch with 1 1/4 Receiver
  • The issue with upgrading your current hitch is that none of our manufacturers can confirm fitment for the 2019 Volvo V60-although all of them could verify fit on the 2018 model. That being said, with a trailer under your vehicle's 1650-lbs towing capacity, you will have no problem towing on your existing hitch receiver. In order to tow with your existing hitch you need a ball mount, hitch ball and wiring harness. In order to determine which ball mount rise/drop is correct for you, I've...
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Info for this part was:

Installed by:
Jeff D
Written by:
Laura H
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Isabelle B

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