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 Chevrolet Malibu with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required.
This custom-fit T-One connector plugs into your Chevrolet Malibu'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 Chevrolet Malibu, 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're going to review part number 118450. This is the Tow Ready T1 Vehicle Wiring Harness with the four-way flat trailer connector. This part is a custom-fit part number. It is designed to fit the 2008 to 2012 Buick Enclave, all models, the 2009 to 2012 Chevrolet Traverse, all models and the 2008 to 2012 Chevrolet Malibu, excluding the LTZ version. It does come with everything shown here on the table, comes with the wiring harness, set of detailed instructions, some zip ties and a grounding screw. This will provide a four-way flat trailer connector at the back of your vehicle to power your trailer's signal lights. It does connect quickly and easily.
There's no cutting or splicing of wires. They use these plug-in T connectors. Basically, you just locate the connection points behind the tail lights on your vehicle, plug these in to behind your tail lights on each side, ground this wire, run this out the back and you'll be ready to plug in to your trailer. The wire for the four-way is a 16-gauge bonded wire. The four-way, you can see, comes with this nice rubber dust cap that you can put right over it when you're not using it to protect it from any damage and from the elements. The specs on this harness, the maximum amperage is 7.5 amps per circuit. Basically, when you go to install this, what you'll do is go to the back of the vehicle and behind the driver's side and the passenger side tail lights, what you'll do is access them and unplug the connectors and then these would T right in.
You just plug this in to the tail light and this to the harness. What you do is start with this one, this has the yellow wire in it, that's the driver's side. You also have this extra white wire that you want to connect to a good clean ground on the vehicle and, again, they do give you a grounding screw if you need to drill a hole and make one. Then what you'll do is take this other T connector with the green wire, this runs over to the passenger side, so you run this all the way over to the passenger side and do the same thing behind the tail light, plug this in to the harness. Then just run your length of bonded wire back in the back of the car. Run this out of the car when you need to plug it into the trailer.
When you're not using it, you can store it inside the vehicle. Again, it comes with some zip ties that will take up any extra slack in the wire, and it comes with, again, this nice set of detailed instructions that would show a lot of the points where you're going to be connecting it to. That should do it for the review of part number 118450, the Tow Ready T1 Vehicle Wiring Harness with the four-way flat trailer connector. .
Average Customer Rating: 4.8 out of 5 stars (205 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 - no cutting, splicing or tapping required.
by: Teresa K07/09/2012
eTrailer totally rocks! !! First of all, I only discovered your website as a result of trying to price a wiring harness for my vehicle. I had gone to the local store to get an estimate for installing a wiring harness on my 2010 Chevy Traverse, and was appalled that they wanted to charge me $79.99 for the wiring harness and then $100 labor!!! I couldn’t believe it – and went home and googled wiring harnesses, and I found your website among the search results. Right there on the page for my wiring harness was a 4-minute video with beautifully detailed instructions for how to install the harness on my vehicle. Without hesitation, I ordered the part from your website, and days later I had it delivered to my door. I recently had knee surgery, so I enlisted the help of my 12-year-old daughter, who, after watching your instructional video, was ready to go... In no time at all, she had the wiring harness completely installed. Not only did she gain a sense of accomplishment, she also gained $10 to add to her piggy bank. THANK YOU eTRAILER! I will be recommending you to everyone! 47299
etrailer staff went out of their way to get the shipment shipped out late tuesday. arrived Friday evening. The installation video made the installation a snap. Installed in about 30 minutes by removing the taillight lenses and cafefully routing wires away from exaust and tie-wrapped to hitch. First quality wiring kit for 2010 Chevy traverse. Saved time and money. I am very pleased and will make eTrailer my first call for my trailer needs. I couldn't be happier. 114314
by: Dave C.05/26/2014
I ordered the wiring harness with 5 to 7 day shipping and Jacob D. was able to get it to me earlier at the same shipping cost! The product arrived in great shape, was easily installed and I am completely satisfied!! I will definitely use etrailer.com again and recommend them to my family and friends. Thank you etrailer.com!! Dave C. 132381
by: Don S.11/22/2013
This custom wiring harness took all the angst out of tying in to our new Enclave's wiring. I watched the installation video, first, which was most helpful. Recommendations to others, who might purchase this product for the Buick Enclave or similar vehicles: 1. You may need wire ties that are longer than those provided with the kit. I had to secure the wiring to a Hidden Hitch frame, which required 10 inch wire ties. (I doubled up on 8 inch ties.) 2. If you use a drill for the self-drilling screw provided for the ground wire, as demonstrated in the installation video, use caution, as it is easy to strip the hole in the thin sheet metal behind the tail light. I hand-tightened, on my second try. Total installation time was about 30 minutes, including 10 minutes to find the stash of long wire ties in my shop. 108186
This product saved me. We bought a 2009 Chevy Traverse and had the dealer put in the trailer hitch with the 7 pin socket for trailer lights. Unfortunately the wiring harness for the trailer lights, the way it comes from the factory on vehicles without the factory tow package, was not connected to the fuse box, and the fuse box doesn't even support it. Entire sockets are missing. And thus, there was no power at the socket for the lights. In a bind, i found this product, and hooked it up in about an hour, without the need for a new fuse box or any nonsense type modifications. Etrailer shipped it out to me overnight since I needed it because we were going on a trip on the weekend. Got the part on time, and put it in, and all was right with the world again. 66826
When I first installed the wiring harness the passenger side rear turn signal would not operate. This caused a number of other malfunctions, e.g. the ignition key could not be removed, the power windows would not operate, the power sunroof was inop., etc. It confused me as I did not know what had occurred to cause all these things to go wrong. After some online research I found that somehow the fuse had blown and caused all of the related malfunctions. Upon replacing the fuse all was well. I subsequently hooked onto a rental trailer, towed it near 1,700 miles and hitch and wiring system worked perfectly. In summary, even after an initial scare and anxiety over the blown fuse, I would definitely recommend your products. 158866
by: Nathan W.06/11/2014
I received the harness to wire my 2011 Chevy Traverse to tow my cargo trailer. The product came quickly, was well packaged, and the wires seemed durable. The harness plugs into the tail light connections so no splicing or any other electrical work is required. A screw had to be drilled into the sheet metal to ground the lights but that’s the only real work required other than removing and re-installing the tail light fixtures. After watching the installation video produced by eTrailer, I went out and had no issues installing the product. Excellent video! The product is great, but the best thing for a DIY install is the video demonstrating the installation. Excellent video and easy to install product. 135066
by: lester bickel07/28/2014
The towing light harness came shipped quickly. It is installed and working well. Katie was very helpful. 143223
by: Matt B.07/07/2013
This wiring harness was shipped quickly and was as easy as anything to install. It's difficult to muster the courage to take apart newer vehicles these days, but the videos associated with the harness along with the impeccable design made the project easy and should be well within anyone's capability and comfort zone. Professional quality, great design, fast and easy installation = excellent product. On a side note, this company is great to work with. Flawless purchasing experience and tons of correspondence kept me informed on the status of my parts. For what my two cents are worth, I highly recommend using this company for any towing/hitch/accessory needs! 87975
by: Jorge O.07/31/2012
The product is very simple to install and easy to use. I will be towing a pop up camper with my Buick Enclave and what i liked most about this wire harnes is that i did not have to cut any wires on my car the plugs fit perfectely and i was able to install it with in 10 mins. 49951
Had a lot of trouble putting wire harness over the bumper bracket as stated in the video. The person doing the video ( I had my computer alongside me under my 2011 Buick Enclave) seemed to just be doing this with his hand. After a half hour of that I tried another half hour of using a fish tape to pull it through. Still no luck. I took a mirror to look at the opening and it didn't look even close as to getting the plugs through so I gave up and installed the harness using a different route with a lot of ties to keep it off the exhaust system. 22346
by: Brian Mc06/26/2013
I have ordered from eTrailer before. Everything I have ordered from them has shipped fast and packed well. I also have seen their YouTube video's for installation on this hitch and wiring harness and that was what sold me on buying from them. It only took around 20 minutes or so to put this hitch and wiring harness on. Fit on our 2012 Chevy Traverse is excellent and until you remove the plastic hitch cover on the bumper you cant see it. I put a receiver hitch on all my vehicles and this has to be the easiest installs I have every done. 86298
Bought the wiring harness and hitch from etrailer. It said in the video that it would take about 30 minutes for the hitch and 15 minutes for the harness. I believe the whole thing tool us about 25 minutes to do. The holes for the hitch were spot on, the harness went in with no issues at all. The only thing that was lacking were the zip ties needed to be longer than in the package to go around the frame correctly. I had some to use so it really didn't stop anything. Thank you once again for the quick delivery and the outstanding products. 82722
by: Marcus O08/01/2012
Easy install, great install video, only a couple of complaints... #1: the zip-ties are too small to actually zip-tie anything to the hitch. They need to be a couple inches longer. #2: the wiring kit has no bracket to affix the plug to the hitch. I used a couple of the zip-ties that were too small to use on the hitch itself as a patch until I can figure something permanent to do. Overall though, easy install, only took an hour or so to fully install both hitch and wiring and I'm mechanically stupid. 50084
by: Dan E.03/09/2012
Very simple install. It's totally plug and play. The video of the install is 100% right on. One thing about the etrailer group. There use to be a day where businesses took customer service as first priority, those days have seemed to slip away, but not with etrailer. These folks have gone above and beyond customer service. They are more worried about your satisfaction than the actual sale. It it’s truly refreshing to see customer service is still alive and well. Thanks etrailer! 33401
by: Dan M07/30/2012
The trailer harness wiring adaptor I ordered for my 2010 Chevy Malibu was excellent. Easy website to search and order, Arrived nicely packaged, arrived quickly. Great instructions, fit perfect, worked perfect. It plugged in perfectly to the stock GM vehicle connectors, and worked 100% the first time.the price was reasonable for the quality of the wiring harness I received. All connectors had water-tight seals for long dependable life. I'll definitely order again from eTrailer.com 49905
I did the wiring harness and trailer hitch receiver myself. I'm not that handy around cars however it between the 2 things, it took me about an hour to instal myself. I didn't have anyone to help me- if I did, it probably would have shaved off maybe 15 mins and less likely to have something fall on my face. Overall, very easy, instructions were great. I installed this on my 2012 Chevy Traverse. I saved a bunch of money- best deal around that I could find!! 26588
Wiring in the harness was as simple as the video demonstrated on my 2011 Buick Enclave. One of the connectors did not want to stay connected in the tail light - I had to 'massage' it a little to finally get it to click and stay connected. Also, the 3 tie wraps provided in package were not long enough to wrap around the hitch as the most logical place to tie. Not a big deal - overall. Very happy with the quick shipment and product is as expected. 75287
i bought the package, hitch,harness and ball mount. the harness took a couple hours, i had trouble getting the taillight assembly out of my traverse, no fault of the product. installation was easy and perfect. i recommend this product to all. 183863
by: Doug G.02/07/2011
It was easy to install, and it looks just like the picture. The only drawback was that the supplied tie wraps weren't long enough to go around the tube of the U-hual trailer hitch-not something that they should have foreseen, just how it worked out for my particular application. The electrical connector plugs worked just fine-very plug and play- except that I did need to drill a hole in the sheet metal to mount the ground wire. 6771
by: Darrell Brandenburg06/04/2014
Thank you Vince for your help when making my purchase of the trailer wiring for my Buick Enclave. It assembled as instucted and by watching the video and useing a coathanger i was able to pull connectors up through the fender well without loosening anything. It would have been nice if the wire ties had been long enough to go around the rear frame tube,but everything went together and works perfectly. 134357
by: Dan H06/26/2011
Very easy to install, and you get exactly what you ordered. I had nothing but trouble trying to buy a harness for my 2009 Chevy Traverse. My Chevrolet dealer couldn't find the harness and sent me the wrong part time after time. I ordered from E-Trailer and had the correct harness in two days, and for less money than from my dealership. Excellent customer service and follow up. Thanks E-Trailer! 17978
by: SCOTT G08/22/2011
EXCELLENT PRODUCT, PURCHASE,SERVICE AND SHIPPING. TOWING PACKAGE ARRIVED BEFORE EXPECTED DATE. MOUNTING OF HITCH AND WIRING WAS AS EASY AS DISCRIBED. AFTER TRADING IN A PICKUP TRUCK AND PURCHASING A BUICK ENCLAVE I NEEDED AWAY TO TOW A TRAILER JUST IN CASE I WOULD NEED TO HAUL MY MOTORCYCLE. THIS TOW PACKAGE IS JUST WHAT I NEEDED. I WILL PURCHASE FROM THIS BUSINESS AGAIN. 22508
by: Steve A.06/30/2013
Great product. Absolutely a breeze to install. But the best part of this order was the etrailer team. Ordered it on Sunday, rec'd it in Thursday. Will not hesitate to recommend etrailer to anyone and will most likely order more accessories for my Traverse I'm the future. I have my eye on a backup camera. Sorry, no photos. The install was too easy to take photos. 86856
by: John N09/04/2013
I ordered and received confirmations that my items (receiver hitch and wiring kit) were pulled and ready to ship on the same day, a Saturday no less! I received my items on Tuesday, and easily installed them without problems. The ease of ordering, purchasing, and installing, made it possible for me to haul the family camper in time for our holiday weekend. 98267
by: Scott V.12/14/2012
The installation video was a great help. However, I'd suggest having a buddy assist with feeding the wiring through the the body panels. There are a couple points were the wiring can get hung up. Having one person wiggle the wiring harness while the other operates the clothes hanger or hook would speed the operation. Using a flashlight was also helpful. 61446
by: Jeff Mo03/16/2013
This wiring harness was easy to install. Instructions were easy to understand and had I needed it, the video would have been very helpful. Installation took maybe 30 mintues and I am picky about neatness even if you can't see it. 3rd wiring harness purchase from etrailer and will definitely be back for future needs. Thanks once again, etrailer! 71038
by: Jerry Seyler03/30/2014
I installed this on a 2011 Buick Enclave. The plug in wiring is great. Much easier than trying to find the correct wire in a factory wiring harness. Had some issues with routing wiring over the frame. Might have been easier if I started at the hitch and fished the wires up to each tail light instead of starting on the driver side tail light. 122869
I ordered the trailer hitch, wiring harness, and bracket to mount harness. It took me about 30 minutes to install hitch, route wiring harness into cars circuitry, and mount plug. Very easy looks like original equipment. I also had the products two days after I ordered them, great service. I am very pleased with the product and service. 110992
by: Mark S05/07/2013
Very simple to install, but I recommendation piece of string to pull the harness up through the quarter panel on the Traverse I installed the harness on....took 10-15 minutes after watching the YouTube video they have.....makes it SUPER easy. Thanks for a great transaction, and I saved over $100 installing the hitch and harness myself! 79280
Hitch arrived quick, instillation was as easy as the video showed. As was previously stated, removal of the exhaust was not necessary. I was able to get the bolts in by just pushing it aside. On the 2011 Traverse, I put the rear plastic cover back on, you can't even see the hitch at all. Have yet to do the wiring portion. 60403
The process for install could not have been easier. I watched the video once and did not need to refer to the instructions. Also can not say enough for the prompt service. I was leaving for a trip on Friday, ordered the wiring harness on Monday, received the package on Tuesday. I will definately use etrailer.com again. 20686
I bought this light kit for my 2011 Chevy Traverse LT. It was easy to put on and worked great. The videos of how to install the items that etrailer sells are excellent and make install a great experience. Fast shipping and great customer service. Buy from etrailer, you will not be disappointed. Thanks etrailer. 9465
by: Mike W04/16/2014
I had put off installing a hitch receiver on my Chevy Traverse because I figured adding the light connector would be a major ordeal. Well, I was wrong! I was able to have this installed in just a few minutes and the online video was probably the single most helpful instructions I've ever had for something! 125473
by: John Eddy03/01/2012
I put it on today and tested it, It is very simple to install, I haven't hooked up to my boat yet, I hope it will light the lights good as I only found 6 volts to brown wires. That will be my problem. I also will buy some kind of wire protector as it will need it on both bottom corners. Thanks Jack. 32939
by: Mike H.07/02/2014
I was impressed with how simple it was to install the wiring harness. It fit very well and I watched the online video that made installation simple. I purchased a Curt 4 pin connector bracket that for the connector that really cleaned up the installation. Very pleased with the final installation. 138719
by: Jared G.08/27/2014
Everything hooked up just fine. I have used these kits before. Just be aware that they try to cut costs by only putting just enough wire to make it to the other taillight. This means that you must route the green wire in the straightest possible line, or it will be to tight to plug in. 148846
by: Mark C / Hamilton AL03/31/2012
Great harness, fast service, competitive prices, simple installation. Prior to purchase all seemed equal with other companies. The videos demonstrating installation earned my business. I am an older guy with a newer phone. I played the installation video (and paused) as I installed. 35733
by: Pat P04/22/2015
It was easy. That’s what I like. Went online, selected my car, and brought up exactly what I needed, Hitch, wiring, everything. Received my order promptly, and installed the hitch and the wiring in about an hour. Had very simple instructions. I would order from etrailer again. Pat 187493
Too easy to do. Excellent video explaning how to do it. Completed in under 15 minutes. Got to love the plug-n-play design! The one issue I encountered is that the tail lights are secured in with 7mm hex screws. This is mentioned no where and I had to figure it out myself. 73255
by: Marv M (M2)08/24/2012
The hitch & wiring showed up in record time. I immediately went to the garage & installed the hitch (wiring later). I took about 30-45 minutes. I did not have to drop all the exhaust system. I was able to slip it up underneath without a problem. Looks good, way to go! 52954
by: David Phillips07/26/2012
Your customer service is way above normal ! The part was exactly what I needed and you have a customer for life. I will recommend etrailers to my friends and family. I liked how you kept me informed from the time I ordered product to the time I received it. Thanks again! 49392
by: Ira W.12/14/2012
Exactly as advertised and on the video. Best installation ever, great product. I typically do not review anything, but this was worth the time. (I didn't have to remove the 2 bolts on each side of the bumper. I felt there was plenty of room to fish the wires.) 61463
by: michael s06/18/2014
Received the trailer lighting system and had it installed within ten minutes. The only issue was getting the line up from the passenger side, and as is noted in every review, the zip ties are too short to go around the tubeo a longer version would be helful. 136204
by: Dwayne H07/08/2011
Little harder to install than the T plug on my 93 chevy pickup. Getting the pass side plug up between the bumper and the body, I had to use a wire to fish the plug and wire to the opening. In all it's alot easier than spliceing and tapeing the wires. 18889
Thank you for adding the video installation on your website. This made it a snap to install. I would recommend this product to all people needing to tow anything . It took about 10-15 minutes to completely install product. Two thumbs up !!! 15174
by: Anthony F06/06/2012
Video was very helpful on how to install. It took a little longer (an hour) due to fishing the wires through certain spots to give it the "professional" look underneath. Really easy and shipped quick! Would definitely recommend! 43071
by: Dean S09/07/2013
Received my hitch for my Buick Enclave within 2 days! Quality was great...packaging extremely well thought out! Attachment will be easy due to directions on youtube. Thank you fir making our move a little less bothersome! 98749
This wiring harness fit perfectly and was VERY easy to install. The corresponding installation video was flawless and helpful. Delivery accuracy and efficiency was above average. Great customer service as well! 103274
by: Deryk W.09/11/2013
It was easy to install. I wish that the wires were a little longer but they are as long as they need to be. I had a little trouble routing the wires but it was still reasonably easy to install and it works great. 99436
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