T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
(12 reviews)
Price: $64.22
In Stock
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118581
Retail:$91.38
Our Price: $64.22
You Save: 30%
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Tekonsha Custom Fit Vehicle Wiring - 118581
- Custom Fit
- 4 Flat
- Trailer Hitch Wiring
- 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.
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-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: 2.1 amps per circuit
- Tail lights: 5.6 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 some interior trim or carpeting to access the 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 an out-of-the-way location within your trunk.
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.
118581 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite
Installation Details
This Product Fits The Following Vehicles
- 2015 - 2016 Subaru Impreza Sedan
- 2015 - 2016 Subaru Impreza Sedan
- 2012 - 2012 Subaru Impreza Sedan - Base model
- 2012 - 2012 Subaru Impreza Sedan - excluding Base model, WRX and WRX Sti
- 2012 - 2014 Subaru Impreza Sedan - excluding WRX and WRX STi
- 2013 - 2014 Subaru Impreza Sedan - excluding WRX and WRX STi
California residents: click here
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
- Wrong item was ordered
- Did not arrive in time
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118581
Average Customer Rating: 5.0 out of 5 stars (12 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: Larry L06/30/2014
Removing the vehicle interior was the timely part of the install. Once that was done, wiring was very easy. However, vehicle designers should have allowed for a power tap under the dashboard for accessories. I did dress the wiring before reinstalling the interior panels. For this vehicle, hitch installation was made easier by removing the muffler from the vehicle and using a uni-bit to enlarge the access holes used for the install of the backing plates and bolts.
by: Russell 02/04/2024
Extremely easy to install. Could not ask for any better customer service!
by: Gen01/22/2017
2012 Subaru Impreza
Fit the existing plugs on my 2012 Subaru Impreza. The time consuming part was placing the wire to the battery. Tucked it in along the interior out of sight.
by: Rob T11/03/2014
2015 Subaru WRX
I checked out the connectors on the tail lights and they are the same as previous years. Compared the service manual wiring diagrams to the pictures on the website and they corresponded to the same pinouts. They were the same. So the TowReady #118581 turned out to be plug-n-play afterall for my 2015 WRX Limited. Once I installed the kit, I tested it with a trailer light tester and everything worked as it should. I ran out of time or I would've hooked it up to the trailer tail lights for a true test. I'm installing a set of LED tail lights on the trailer that only draw 444mA (0.444A) along with a Curt C56196 to make it work with separate amber signals and stop lights. Other than routing the wiring to the battery (which I did through the interior of the car and through the firewall (which was a pain) but it has a clean factory finish that I wanted over splicing into the factory wiring harness.
by: Charles F06/28/2015
Worked great after installation. No p roblems
by: Eric07/19/2018
2015 Subaru Impreza
Amazing product, just plug and play.
I recommend this to anyone who wants to save some time.
Thanks etrailer.
by: Nate P08/18/2020
The kit was very easy to install and the instructions were clear. This was my first time installing wiring of any kind in a car and it took me under 30 min.
by: Fritz08/16/2017
2015 Subaru Impreza
Great hardware and wiring ... definitely helps to be able to putt a trailer with my Impreza!
by: Ross10/03/2016
2016 Subaru Impreza
Great customer service!
by: Karl 09/04/2022
by: 02/09/2022
2012 Subaru Outback Wagon
by: 08/31/2021
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See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- Can a 2014 Subaru Impreza Carry a Motorcycle Carrier over 350 lbs Tongue Weight?For your 2014 Subaru Impreza, we don't have any trailer hitch rated for over 350 lbs tongue weight. I don't recommend having a trailer hitch made for your application because the vehicle is not rated for that kind of weight. Your best option to transport your motorcycle is to use a trailer hitch and trailer. I recommend the EcoHitch Invisi Trailer Hitch Receiver - Custom Fit - Class III - 2" # 306-X7241 if you have the sedan or # 306-X7211 if you have the wagon with single exhaust. ...
view full answer... - Trailer Wiring Harness Recommendation for 2013 Subaru ImprezaYes, the T-One trailer wiring harness part # 118581 is a confirmed fit for your 2013 Subaru Impreza sedan and would be a great fit. We recommend this brand the highest as it tends to be the most reliable over time.
view full answer... - 4-Way Wiring Options For a 2015 Subaru Impreza Sedan Versus WagonFirst I need to know if you have a sedan or wagon version of the 2015 Subaru Impreza sport premium. For the sedan we have the Custom Fit 4-Way # 118581 or the Splice-In 4-Way # C56496 you found. For the wagon we have the Custom Fit 4-Way # 118573 or the Splice-In 4-Way # C59236 will also work.
view full answer... - Can a 2015 Subaru Impreza Tow a Small 1,460 lb Tent TrailerAccording to my research you can safely tow a 1,460 lb trailer with your 2015 Subaru Impreza as long as that trailer has brakes that you're able to activate. I recommend checking to verify this in your copy of the owner's manual or with your local Subaru dealer prior to towing though. It's kind of a toss-up on whether or not a trailer that light will have brakes so I recommend checking on that first, and then installing the following parts if you don't already have wiring and a brake controller...
view full answer... - Availability of Trailer Hitch for 2014 Subaru Impreza SedanWe have several hitches available for the 2014 Subaru Impreza sedan, depending on the model. If you have the WRX or WRX STi models you will want Curt hitch # C11317. If you plan on doing some towing, you will want ball mount # C45521, 2" hitch ball # A-82, 1-7/8" hitch ball # A-80, and wiring harness # 118581. Pin and clip are included. If you plan to do some light towing you will want ball mount # C45521, 2" hitch ball # A-82, 1-7/8" hitch ball # A-80, and wiring harness # 118581. Pin...
view full answer... - How to Troubleshoot Trailer Wiring Converter Box for ShortWhat you will want to do is test the wires going into the box of the converter box for voltage with a circuit tester like the # PTW2993 to see if there is voltage going into the box when the taillight functions of your vehicle are applied, and then test the output side of the box to see if the current is making it through the converter. If not then the problem is that the converter box has shorted itself out and would need to be replaced. Before you replace it you will want to inspect...
view full answer... - Troubleshooting Non-Functioning Headlights After Wiring Harness Installation on 2015 Subaru ImprezaWe offer different wiring harnesses for the 2015 Subaru Impreza depending on whether it is the sedan or the 5-door wagon. The sedan uses part # 118581 and the 5-door wagon use the item you referenced, part # 118573. Both install in the same way, by plugging in at the taillight connectors behind the car's rear lights. The same circuit handles both the car headlights and the taillights. Odds are that either there is now a blown headlight fuse that needs to be replaced or that there is a...
view full answer... - Trailer Wiring Recommendation for a 2014 Subaru Impreza HatchbackFor your 2014 Subaru Impreza hatchback you would have to use a hardwire harness for trailer wiring like the part # 119179KIT. The plug and play harness like the # 118581 will only fit the sedans.
view full answer... - Best Way of Carrying Motorcycle on 2015 Subaru ImprezaThe only hitches available for a 2015 Subaru Impreza are a Class I, which would lack the tongue weight capacity to handle the weight of your bike plus a hitch mounted carrier. Typically this happens when it's determined that the under body structure of the vehicle isn't capable of handling weight in excess of 200 lbs. Your best bet would be to install a hitch and use a small trailer. For the 5 door wagon with a single exhaust, I'd recommend the Curt # C11286 and the Tekonsha # 118573 wiring...
view full answer... - Trailer Hitch Recommendation for 2013 Subaru Impreza SedanThe trailer hitch you want for your 2013 Subaru Impreza four door is the EcoHitch part # 306-X7241. This hitch has a 2 inch opening which means that it would allow you to carry a bike rack with more than 2 bikes loaded since you mentioned wanting to carry a 3 bike rack. For trailer wiring I'd then recommend the Tekonsha kit part # 118581 which will install without splicing and has our most reliable converter box. Since you plan on doing some towing you might be interested in etrailer...
view full answer... - Recommended Trailer Hitch For 2017 Subaru Impreza 4 Door SedanFor a 2017 Subaru Impreza 4 door, I recommend the Draw-Tite Sportframe Trailer Hitch Receiver Class I - 1-1/4" # 24960. This is a confirmed fit for that vehicle. It is a bolt on installation with a sturdy, square design. It has a black powder coat finish covering an e-coat base for superior rust protection. If you will be towing with this hitch, I recommend the Sportframe Drawbar 4" Rise 2000 lb kit # 3594. This comes with the pin and clip, but you will need a hitch ball. I recommend...
view full answer... - Custom Fit Vehicle Wiring on a 2016 Subaru Impreza HatchbackI can agree with you that running the power wire can be time consuming. It does make it easier if you can get the back of the vehicle on ramps. The hardest part is routing the power wire over the rear axle and staying away from anything hot or moving. Once you get past the axle you can run the wire along some factory hard lines or in between a plastic panel and the body to the front. All of the wiring kits for the 2016 Subaru Impreza require a power wire be ran to the battery. The power...
view full answer...
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Written by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Updated by:
Laura H
Updated by:
Wilson B
Updated by:
Alexander C
Updated by:
Isabelle B
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Charles F.
6/27/2016
Been working fine, no problems.