Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
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 - no cutting, splicing or tapping required.
Features:
Specs:
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.
Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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.
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.
Today we are going to install part number 118396 from Tow Ready. We are going to install this T-1 harness on a 2005 Buick Tarazza. And also, we are going to use a bracket, part number 118144. First we will install our bracket. It is going to install to the factory bracket that is on the hitch. Now this bracket here, it can be installed like this on the hitch. Or, if you did not have a bracket on the hitch, you could easily attach this to the bumper. We will go ahead and start installing our T-1 connector. And we do have to get the tail lights off the vehicle, so we have to open up the back hatch to get to the screws to take off the tail lights. We will take off these two screws right here and then we just pop the whole assembly off. Once you have the tail light loose, go ahead and disconnect it from the wire harness. It is this connection right here you want to take apart. And then go ahead and repeat the same steps for the other side.
Next what we are going to do is our 4-pole in behind this cavity here behind the light and down out toward the bottom. Also, what we want to do is take the passengers side and push it down in there, too, and pull it out the bottom. The yellow side with the brown wire will always stay up here on the drivers side of the vehicle. In fact, we will go ahead and just snap that into place. All right, now that we have got our passengers side, we will go ahead and run that underneath the body, up to the other side. We will go ahead and install it into our bracket, push it on through, and just kind of work it until it catches those edges right here. And it will be secured it is basically a friction fit. We will leave that alone for now and continue with our other harness going back to the other side.
All right, we will take the other half of our harness, going back up to the passengers side, and just tuck it up in there as far as we can so we can pull it from the top. All right, go ahead and pull it out and just make your connection. And then take your ground wire and just screw it to the sheet metal right behind the tail light. Get it started, and then go ahead and finish it off with a hand tool so you do not strip it out. All right, let us go ahead and reinstall our tail light assemblies now. At this point, we have got our wires pulled back behind the hitch a little bit, and we will go ahead and just get our wires ready and we will set tie them to the back side of the hitch. And do the same thing for the other side, and make sure the wire has plenty of distance between the exhaust. All right, and that finishes our install of part number 118396 from Tow Ready on our 2005 Buick Tarazza.
2005 - 2009 Pontiac Montana SV6
2005 - 2007 Saturn Relay
2005 - 2007 Saturn Relay
2005 - 2007 Buick Terraza
2005 - 2007 Buick Terraza
2005 - 2009 Chevrolet Uplander
2005 - 2009 Chevrolet Uplander
2005 - 2009 Pontiac Montana SV6 All Models
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Average Customer Rating: 
4.8 out of 5 stars (30 Customer Reviews)
by: Jonathan S.05/06/2013
Is this review helpful?
All products were exactly as specified, worked perfectly and the customer service from etrailer was second to none! I would highly recommend etrailer to anyone!!79095
by: zachary03/09/2013
Is this review helpful?
The harness was a perfect match and saved me a huge amount of time. Love the fact that I didn't have to cut or splice anything.69781
by: Bryan02/28/2013
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After trying another companies wireing for my vehicle that did not work, they thought I was crazy till I sent them pics of where I was supposed plug it to they said my vehicle has wireing they never saw before. I found this one and it mounted with no issues and took about 20 minutes. 68114
by: bill02/01/2013
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fast and good service fast shipping installing wiring harness today64773
by: Lee Bahney12/27/2012
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Works as intended. Great delivery! 62072
by: Gregg H08/21/2012
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Everything showed up faster than promised. Packaging was excellent and directions and video made installation easy. Will be ordering accessories soon.52527
by: jbg08/09/2012
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While this wiring harness is considerably more expensive than your average 4-wire plug you'd by at the local parts store, it was a breeze to install. Removed the tail light assemblies, plug in one side, route the wires down behind the bumper, back up the other side, plug in. No drilling, no soldering, no wire taps that often cut wires, no messy electrical tape to eventually come unglued, no elaborate wiring under panels or carpet, and no unsightly wires hanging from unexpected places. Definitely worth the extra price. Took me 5 or 6 minutes to install on a 2005 Saturn Relay. Zip tied in some strategic locations. Tested brakes, signals, and hazards. Everything worked great! Fast processing and quick shipping! Thanks etrailer.com!51135
by: Ken t06/15/2012
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Very easy install a child could do it 44384
by: larry p.06/12/2012
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Fast delivery eazy installation instruction. Good product!43783
by: Bleh06/10/2012
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Unit bolted up nicely. Fits well and looks great. The wiring harness was slick and easy.43575
by: Kevin H.06/09/2012
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Very easy to install. Took about 30 min. 43426
by: Kevin H06/06/2012
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Have not installed yet, but I do know it beats cutting wires and having to re soldeir each one. Thanks for your quick service. Kevin 43050
by: Matt04/04/2012
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Easy to install. 36179
by: Sue D.03/23/2012
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T one connector for our Uplander van was a breeze to install and works flawlessly. We were under time constraints and our phone rep helped us pick the fastest shipping option for the best value. She will be getting a seperate commendation letter. This will certainly not bethe first time I use or recommend e-trailers.34867
by: c®zo03/19/2012
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WOW! That is all I have to say as to how easy it was to install... Thank you.34360
by: Jim R03/15/2012
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Easiest wireing harness I have ever ins talled33995
by: Tobias03/15/2012
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so easy to install, video on the site leaves no question.33965
by: jim f03/14/2012
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fast shipping received in two days!!! really loved the tracking info.the hitch was packaged perfectly, will assemble this weekend,very satisfied33910
by: kevin w01/06/2012
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The t wires were very easy to install took about 10 minutes. I definitely recommend nash for anyone wanting to be ok wires up. 2006 terraza cxl29183
by: Herman K.10/01/2011
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After being sent the wrong item from Amazon.com that was suppose to fit, it was a pleasure to get the electrical connections I needed from etrailer with such easy instructions and a video to help me install it. Thank You!24948
by: wire kit09/20/2011
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brake/signal wires reversed.great quality connections at any price. happy w/kit for price24265
by: Jim07/16/2011
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Quick to install.. 19535
by: paul07/11/2011
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great product easy to install 19198
by: Joe06/18/2011
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Super fast service, easy to install. 17247
by: James S05/16/2011
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Worked perfectly and was super easy to install!14272
by: Adam L.05/12/2011
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Received the product quickly and was able to install this harness extremely quick. The instructions were easy to follow and it took me all of 15 minutes to hook up to my current brake lights. Could use a few more wire ties but other than that I am very pleased.13662
by: Nick F03/21/2011
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Great product and arrived within 3 business days. Installation video made the project a breeze!9992
by: Eric01/10/2011
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Wiring '07 Uplander This product takes all the pain out of tapping into the marker, brake, and turn signals. Just route the wires and plug it in to existing connectors. 5261
by: Kris01/16/2010
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Excellent Product Very easy to hook up, neat and tidy. A whole lot easier then the old butt splice system we are all use too. 2646
by: Alfred T.03/16/2009
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Quick and easy install Thanks to your video and instructions it works perfect1653
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Installation Details
