Price: $33.54

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

Item # 118496

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tekonsha custom fit vehicle wiring 4 flat t-one harness with 4-pole trailer connector
tekonsha custom fit vehicle wiring converter 4 flat 118496
tekonsha custom fit vehicle wiring trailer hitch 4 flat t-one harness with 4-pole connector

In Use/Installed

2013 toyota tacoma custom fit vehicle wiring tekonsha converter 4 flat 118496
2013 toyota tacoma custom fit vehicle wiring tekonsha trailer hitch 4 flat t-one harness with 4-pole connector
2013 toyota tacoma custom fit vehicle wiring tekonsha converter 118496
2013 toyota tacoma custom fit vehicle wiring tekonsha 4 flat 118496
2013 toyota tacoma custom fit vehicle wiring tekonsha trailer hitch in use
2013 toyota tacoma custom fit vehicle wiring tekonsha converter 4 flat in use

Customer Photos

tekonsha custom fit vehicle wiring trailer hitch 4 flat 118496
tekonsha custom fit vehicle wiring trailer hitch 4 flat t-one harness with 4-pole connector
tekonsha custom fit vehicle wiring trailer hitch 4 flat 118496
tekonsha custom fit vehicle wiring trailer hitch 4 flat 118496
tekonsha custom fit vehicle wiring trailer hitch 4 flat 118496
tekonsha custom fit vehicle wiring trailer hitch 4 flat 118496

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • 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 - no cutting, splicing or tapping required. Includes tail light converter. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118496 or order online at 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.

Tekonsha Custom Fit Vehicle Wiring - 118496

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. Includes tail light converter.


  • 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 - no cutting or splicing of wires
    • Locate connection points either behind tail lights or along frame rail
    • Plug in T-connector
  • Includes a tail light converter to ensure that your vehicle's wiring matches that of your trailer
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


  • Maximum amperage:
    • Stop/turn lights: 2.1 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located on the driver's side and passenger's side, either behind the tail lights or along the frame rail. If your wiring harness is behind the tail lights, you will have to remove the tail light assemblies to gain access.

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.

Tail Light Converter

A tail light converter 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. The tail light converter combines 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.

118496 Tow Ready T-1 T-Connector - 4 Wire

118496 Installation InstructionsInstallation Details 118496 Installation instructions

This Product Fits The Following Vehicles

1993 - 1998 Toyota T100 Pickup

1993 - 1998 Toyota T100 Pickup

2014 - 2015 Toyota Tacoma

2005 - 2007 Toyota Tacoma

2005 - 2013 Toyota Tacoma excluding X-Runner

2008 - 2015 Toyota Tacoma without factory 7-Way

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 Tow Ready Custom Fit Vehicle Wiring 118496 Review

Today we'll be reviewing part number 118496. This is the T-One Vehicle Wiring Harness from Tow Ready. This is going to provide a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights. To see if this is going to fit your particular year, make and model, you can refer to the vehicle list at the bottom of the product page. This is going to be compatible with 5-pole, 6-pole and 7-pole adapters that are sold separately. The 4-way flat connector also has a nice dust cap that slips over the connection points. Just to keep them protected from the elements.

It is attached so you dont have to worry about losing that. A great advantage of this system is that it connects quickly and easily so no cutting or splicing of wires required. All you got to do is locate the connection point either behind the tail lights or along frame rail and plug in T-connectors. It's going to include the tail light converter that's going to ensure that your vehicle's wiring matches that of your trailers. The unit's constructed of 16-gauge bonded wire. It's going to comes with the dust cap for the 4-way flat like I said earlier.

Again, that is attached. When it comes to maximum amperage, the stop and turn lights are going to be 2.1 amps per circuit. Your tail lights are going to be 7.5 amps per circuit. Just to go over a few other things that you're going to get. You're going to get the complete harness, its got the ground wire attached with the ring terminal. You're going to get a larger zip tie, two smaller zip ties, a self tapping screw and a knot. The knot and the self tapping screw are design to secure the ring terminal for the ground connection depending on your application.

You're going to have to either drill into a nice clean metal surface or you can use the knot and attach it to a pre-existing ground connections. Again, you got the knot and the self tapping screw. You're going to use one or the other depending on your application. For the install, this is a custom-fit T-One connectors going to plug into your vehicle's wiring harness. It is going to be located on the driver's side and passenger's side, either behind the tail lights or along the frame rail. If your wiring harness is behind the tail lights, you will have to remove the tail light assemblies to gain access. Once you have everything connected and the installation is complete.

The 4-way flat connector can be stored beneath the vehicles rear, down by the hitch. We do recommend a mounting bracket that's going to be sold separately. That's just going to keep the connector secure and up out of the way. It's also recommended that you use a small amount of grease on all electrical connections like the plugs on your vehicle and the 4-pole connector itself. That's going to help prevent corrosion. Then the tail light converter, because most trailers run on a two-wire system, the separate brake and turn signals from your vehicles through our systems need to be combined so they are compatible with the wiring system of your trailer. The tail light converter combines the brake and turn signal functions of your vehicle so that they run on one wire to properly activate your trailer's lights. Keep in mind that this will not affect how the tail lights on your vehicle operate. I think that's going to do it for our review of part number 118496. This is the T-One Vehicle Wiring Harness from Tow Ready. .

Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118496

Average Customer Rating:  4.9 out of 5 stars   (376 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. Includes tail light converter.

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by: K.L.01/06/2014

2014 Tocoma..The wiring install, went slower the the hitch install. the main reason was the taping of the wires to the truck wiring and getting up and down. (time was 50 minutes) Install the driver side first, only the plug is placed with the tail light, install the passenger next, only the plug is placed with the tail light. Tape the new wiring to the stock wiring, start with the tail lights and work down you will find you have just the right length of wire. I taped the 2x2 black connector to the wiring harness. If the wires were 6 inch's longer on both sides, I would have used the two sided tape and stuck the connector on the frame 111973


I have used the the trailer connection on 5 different days for about 1 hour each time, two weeks ago I had to used the trailer to help move a friend of ours and it was raining so the lights was on all the time. the trip was 12 hours,there and 7 days of short trips and on the way home about six hours in to the return trip i stopped for fuel and when I started the truck I lost the tail lights and the brake lights,blown fuses. I stopped at a auto parts store and picked up some new fuses,when i turned on the lights the new tail light fuses popped and when I stepped on the brakes, the new brake lamps fuses popped. We stopped for the night, I will not drive a truck and a trailer at night without lights.The next day, and a hundred lighter, I got home, I disconnected the trailer and replaced the fuses. The fuses stilled popped. I opened the tail lights and disconnected the left tail light trailer connection and the fuse sill popped, and i disconnected the right tail light trailer connection and the fuses held. I will pull out the bad harness and replace it with a factory tow harness more money and more time to install but I no more problems and I will order a trailer brake to plug in to the stock wiring.

K.L. - 02/09/2015


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by: Scott Hart04/25/2013

Installed on a 2011 Tacoma (pre-runner model)Doesn't get any better than plug and play! way less effort and problems over time to use a plug and play harness over the conventional crimp or strip and wire together solutions. Saves time and labor. My only complaint is the web site and the instructions need to be updated because this kit shows fitting up to a 2010 Tacoma. I assumed the factory harnesses were the same from Toyota but it creates doubt when your kit shows up to 2010 everywhere and it's now 2013. My guess and the search link at etrailer were correct and it will also fit newer Tacoma's even though nothing beyond that search request showed newer than 2010. About 30 minutes including figuring out how the clips on the Tacoma tail lights work to remove them safely and checking them after the install.Only tool required is a 10mm socket and perhaps an extra zip tie or two if you choose. I didn't bother using the wire covering that some purchased seperately and used. It's a small piece of wiring for trailer lights not the main fuse panel so I didn't overkill the install but you can if you prefer. Customer service, communication, shipping from etrailer was first rate and no complaints. 77843

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by: Logan Somervell01/23/2013

Installed on a 1997 Toyota T-100. It took about 30 minutes. Everything was easy to install. It took a few minutes to get the truck plugs pulled apart (probably hadn't been pulled apart before). The plugs on this harness plugged right in with an audible click. I used the included cable ties as well as a few of my own to secure the wiring under the truck. Now all my trailer lights work, and I don't have to worry about any more splicing. I wasn't sure the passenger side wiring was long enough to reach across the truck, but it made the distance with a little room to spare. I decided on this product after spending most of a Saturday splicing and checking connections. I was trying to find out why I didn't have right signal or brake on my trailer. Truck's lights worked fine, but the trailer's lights didn't. I even checked the trailer while connected to a friend's truck, so I knew the problem was on the truck's end. I put all of the original truck wiring back in place, checked all the lights on the truck, installed this product, hooked up the trailer, checked the trailer lights, and now everything works. Thanks e-trailer. 63899

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by: iain10/29/2012

This electrical harness is brilliant, good videos showed me how to install in minuets. Nice work! 58329


Im still liking the products I reviewed very much. I never usually bother to give feed back on stuff I buy online but it was so refreshing to have such a great product and for it to be so well supported buy your team I really wanted to express gratitude.

iain - 05/16/2014


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by: Ryan R.01/13/2012

The wiring system was pretty straight forward. The video pretty much said all I needed to know. I'd rather use this set-up than any guy at a hitch shop doing a quick splice to the wiring in my truck, any day. The only thing I did differently from the video was put my wiring in the black conduit that you can buy pretty cheap at any auto parts place. This change will keep the wires from chaffing and makes the whole job look more professional. 29655

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by: Carl S02/09/2015

I have a 2015 Tacoma and installed this in about 30 minutes, requires the simple removal of the tail lights and plugs snap in line, no cutting or splicing. Hint: once the tail light bolts are taken out the tail light pop out by pulling straight back on them. 172990


Really? Wow, its still great and recommend to anyone that asks.

Carl S - 02/17/2016


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by: Chuck09/12/2013

Have never used the T1 connection type cables (in last 4 installations) but THIS is the way to go. As always, videos and written instructions were great, but hardly needed....almost idiot-proof! 99675


They were great when I got them, great when I installed them and they have worked as advertised read great!Thanks for asking.

Chuck - 09/15/2014


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by: Peter R11/05/2011

Ordering was easy,your web site was simple to maneuver in. I was notified the order was received and that it was being shipped early. I was skeptical as I found it on the net. Did not know your company and could not believe the rapid service. I ordered a lighting kit and trailer hitch for my Tacoma pick up. It arrived today in 5 days from the order date. I unpacked it to find it was very well made, I read the directions and 90 minutes later it was on the truck. The lighting took 30 minutes, well made I will recommend to my friends. It is perfect, exactly what I wanted. The construction and directions were "right on" everything fit perfectly. I am very pleased and would hot be afraid to order anything you sell. Thank you for my hitch. It was a pleasure doing business with you. Peter R 26603

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by: Chris02/15/2013

I ordered this on Tue. and It was delivered on Fri. Installed in 30 min. and I took my time. Great product and etrailer had great communications. Toyota wanted $100 for the factory wire harness and over $100 to install. I intalled this myself and it was less that $50. 66484


1.5 years later no issues at all.

Chris - 08/16/2014


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by: Gerry E. B.12/25/2010

Trailer Hitch Wiring Harness 2010 Tacoma I found this harness easy to install on my 2010 Toyota Tacoma. The directions were easy to follow with pictures to reference. It took me about an hour and a half to install complete with zip ties to make sure all was neat and tidy with the wiring. The hardest part was getting the taillight assembly out of the truck. Once the bolts are out, you have to use some force to pull the assembly back off the guide pins. I would recommend this harness to anyone looking to put in a hitch or in my case a LED light bar for stop, running and turn signal lights. The folks at etrailer were super fast in getting the harness to me. I would do business with them again would recommend them to my friends. Thanks for a great product and fast service! Gerry B. 4608

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by: Paxton K07/05/2015

The product was delivered and functioned just as the company stated. It was easy to plug into and worked to perfection when I hooked up to my trailer. 209477


No problems at all. This product exceeds my expectations.

Paxton K - 07/04/2016


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by: Scott W.06/07/2017

I had received multiple quotes to install a hitch on my 2014 Toyota Tacoma. All were around $400. So I did a little research and found the site. I found I could buy the hitch, the wiring harness and ball myself for less. The installation video they provided me gave me the confidence I could do the install myself. Now it's on and the entire process couldn't have been easier. If you can use a socket wrench and screw driver you can install your own hitch. Piece of cake! 391017

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by: Bruce N.04/16/2014

good fit on the connectors on the rear of the taillights, I followed the instructions starting on the driver side. routed the wires down and to the hitch following the existing wires... bad plan! seems like 44$ was not enough to provide 12" more of wire because the passenger side wires were short! after zip tying at 10 locations along the stock wire path (you would think Toyota would use the best route?) I had to cut the ties and route the wire in the bed sheet metal channel to make them long enough. WOW I would have gladly paid $2 more to have some extra wire to chose my route better. product did perform as advertised. give me some more wire and earn a better rating. 125681

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by: Jerry H.08/05/2014

The installation videos made hook up easy. Everything fit and the wiring harness seems to work as advertised. 144503


Works just fine. Have had no issues with it. Thanks

Jerry H - 08/07/2015


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by: Dave D.09/08/2017

It's always nice to deal with a retailer either online or brick/mortar that knows what they are doing. As a normal thing I am Larry about internet companies I've never dealt with. I search them and look for comments not on their own website. etrailer is definitely an anomaly with respect to a line retailers. They stock good products and explain those products. They charge a fair price and ship right away. The Tekonsha wiring harness I bought is great quality and is simple to install. Even an automotive novice could install this harness using etrailer instructions. I certainly recommend them again and use them again. 430326

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by: DP01/12/2010

Best value no-mod 2009 Kit It works fine on a 2009 Tacoma Double Cab 4x4 Longbed. The LED drivers are sealed inside, so they still take the standard 12v input. It even works without drilling as is shown in the video. There are grounding bolts on the body behind the light housing that allow grounding with the included nut instead of the self-tapping screw shown in the video. Acetone was used on the grounding bolt as well as the sticky tape mounting surface. A small amount of grease was used on the grounding terminal to prevent corrosion. Skip the dealership - ten minutes and a 10mm socket is all it takes. 2639

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by: Buck C.01/02/2017

Everything you guys promised I received and the shipping was incredibly fast. I did have a little problem with the location of the hardware for the hitch. I just wasn't thinking to look in the hitch itself and was looking in the box for a bag or a smaller box, but I found it quickly enough. Everything else was just as it should be. Bolt holes lined up. The wire harness worked like a dream. Thanks so much for the awesome installation videos. They really gave me the confidence to make this purchase knowing that I would be able to install this myself and save a lot of money by doing it. 331395

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by: J Locke05/11/2012

Customer Service is impeccable, priced right and very easy to install. The similar part which was aaftermarket from Toyota had directions to install up front of truck in the area of the fuse box and then routing the wiring underneath to the rear section- impossible to understand, plus Toyota wanted $125 for the part! This was a great father / son project for my Dad and I to install on my 2012 Tacoma. I can't say enough positive things about, this is a quality product, priced right and easy to install. Thank you etrailer for the service you provide! 40103

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by: Rex A.08/01/2017

I gave you a 5 star even though UPS tried to mess up your excellant delivery time. they sent it to the wrong PO so instead of getting it 3/17 it came on 3/20. it attached easily per instruction and video. the only improvement I made was to encase all the wiring in flexible conduit. when finished everything tested perfect. thank you very much. 413384

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by: Don P.04/12/2013

The light kit came in the same box as the hitch so it arrived in perfect condition and only 4 work days after I placed my order. I've done a lot of hitches in my time and even more wiring but this is the simplest I have ever done! Installation actually took less than 15 minutes, a couple of bolts on each side to remove the lens, unplug the harness and plug it into the new wiring and the new wiring into the old housing, route it out to the hitch and use the supplied zip ties to keep in place - Done! Life made fast AND simple! 75527

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by: Richard Littlejohn01/09/2012

In review of the T-One Connector with Upgraded Circuit Protected Converter, I can't say enough good about etrailer's excellent products and services. There was a complete ease in the ordering process; item shipped fast and exactly as described and pictured. The item was great quality and easy to install. The follow-up from etrailer from the order process, withshipping details, and even after receipt of the item was exceptional customer service. is the place to come for any all wiring and adapter needs! 29348

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by: Paul M.04/13/2017

I own a 2015 Toyota Tacoma 4x4. I bought this harness so I could tow my Harbor Freight trailer and do a direct plug in. The harness works great and is easy to install. Just be aware if you bought a Harbor Freight trailer there are issues getting the lights to work correctly on the trailer and not the Etrailer harness. I did get my lights to work on my Harbor Freight trailer but not without some head scratching and using Google. One more thing, buy Etrailer's bracket for the 4 pin plug, such a clean set up. 367094

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by: Rodríguez12/24/2014

Install was as easy as 1, 2, 3. Used more tie wraps then we're sent but other than that... Perfect. 166793

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by: Mark Wood05/28/2013

I ordered T-One wiring harness for my '96 Toyota T-100 late in the day and got an order confirmation immediatley and then got an e-mail saying it was shipped that day. I got it two days later and installed on truck. Easy to install even on a 17 year old pickup that had never had the connectors apart. Thirty minutes or less is all it took. Had to find my tools that my son borrowed. My son recommended this company from reviews he had from forum members. Thanks guys. 82142

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by: David H.03/22/2017

My harness was exactly what I was told it was. All I had to do was plug it in and was done in less than ten minutes. Took longer to get the bolts out of my lights. My old wiring harness had quit working and I went to the Toyota place but the wanted 100 bucks for a harness and I would have to take the fuse box out of the dash in order to put it in. With etrailer the saved me hours worth of work and more than half the cost. Will definitely recommend this to anyone who needs one. 357268

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by: Eric S03/12/2012

Tacoma 4-wire flat harness went in EXACTLY as the instructions said. It's not so much the product, which was excellent, but the great installation video that was available on the site that convinced me to buy it here. has always impressed me with the quality, and equally as important, the service. Big or small, every order ever made through has been handled with the same outstanding service and care. Thank you! 33680

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by: David L.06/19/2013

After watching the on-line youtube video I decided to purchase a wiring harness. It took me about 20 minutes to install when it arrived. Everything snapped together just like the instructions said and when I tested it, all the lights worked exactly like they were supposed to. I am extremely pleased with the quality, price, and simplicity of this product and would not hesitate to recommend this site to anyone in need of a trailer wiring harness. 85328

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by: Bertram D.05/23/2016

Easy install even though we worked on the ground. We did not remove the bumper just supported it. We removed the two top bolts that hold the hitch and installed the hitch with the four bolts, loosened the other three and installed the shims separately. Once all the bolts were started we tightened everything down. Great product and also easy install on the wiring harness. Took us around 90 minutes for everything. Thanks great products...Bert D. 251217

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by: It works just fine.01/05/2014

Installed on a 2006 Toyota Tacoma PreRunner. The old computer term "plug and play" would explain it. Watch the video if you don't know how the tail light covers come off. Simple to install. I took the extra step of covering the wiring with split loom and the wrapping that in electrical tape. That way there would never be a chance of wires rubbing against metal and causing a short over time. I used a few extra zip-ties too. 111959

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by: April Hunting12/06/2012

Haven't had the opportunity to use the product, but I will say customer service will bring me back. I had a person that was available by name through the whole process. I hate having a generic email and number so you get a different person each time and have to explain the issue each time. Even though I haven't used the part yet, I know if I do have an issue who to go to. Thank you for such personal customer service. 60803

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by: Gary H06/23/2012

Nice quality, easy installation, took the time to add corregated sleeving insulation to protect the wiring (plan to keep the truck a long time). Adding the sleeving took a little longer but the installation looks like it came from the factory. I would recommend this product this system to others. The only thing I would have liked to add would be an optional mounting bracket for the trailer connection to bumper. 45387

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by: Gary M12/10/2012

Great product. Added trailer wiring harness without cutting any wires. The new wiring pretty much follows existing cables. Worked the first time I plugged it in. I was able to zip-tie an existing cable so that there should be no issues with any sharp edges cutting the new wires. Make sure you use a bright light under your truck to see where the existing wires go. It's hard to see the existing black cables. 61056

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by: Adam D.08/29/2011

Quick and easy connection on my 2008 Toyota Tacoma. Just pop off the tail light assemblies, run the wires underneath the bed, connect the wiring harnesses, reconnect the tail lights and you are ready to go. At the most, it's a 20 minute job. For best results, use some electrical contact grease (p/n 11755) on all of the connections to ensure a smooth, water resistant connection and to avoid corrosion. 22995

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by: Edwin T.10/18/2013

I ordered this item to replace one I got 5 years ago that started to work erratically (most probably after several years of launching my boat in saltwater without disconnecting the plug!). It is a very easy installation and "like-factory" fit. I did notice that the main circuit box is smaller than the one I'm replacing so for me is a plus since it will be easier to hide behind the light fixture. 104256

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by: JDUBYA12/31/2010

Quick & Easy I am very happy with my purchase from etrailer. I placed my order for several parts on Tuesday morning. Best pricing I could find anywhere. I opted for the Free 5-7 Day shipping. Order shipped that day and was received Thursday around lunch time. That's quick!!! Everything I ordered was in the box. Installation was as simple as promised. Overall A+ rating from this guy. 4824

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by: TXM08/04/2011

The harness is easy to install following the enclosed directions and results in a nicely finished installation. Although more costly than bargain basement wiring harnesses, using a custom designed wiring harness eliminates the need to cut and splice wiring and makes for a lot cleaner and easier installation. It is well worth the difference in price. Shipping on the item was very fast. 21132

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by: Paul Smith05/01/2017

Harness Fit well: the Black and Yellow wires go on the drivers side and the green wire goes to passenger side it tells in the instructions. You need to purchase some black wire mold and black tie wraps to make it look factory. when you take out tail lights pull light assembly straight out. then you can access the plug. great service, wiring harness is a great product. thanks etrailer 374571

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by: Stephen11/08/2017

This product was nicely engineered to be fast and simple to install. The instructions were right on with how to get to the lights and the underside of the bed/bumper area. Don't drop the light when you unclip the wiring to each side tail lights and use the zip ties to keep those wires from dangling later. For the most part it was piece of cake, you do need a few tools.... Steve 450262

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by: Lcrain01/08/2016

Had a hard time finding the right wiring harness kit to hook up trailer lights on my new Tacoma. Found your web site, you had exactly what I needed, so I placed my order. It was shipped to me in just a couple of days, and I am ready to rock and roll. There was even an instructional video showing how to connect everything on my specific truck. I highly recommend these folks! 235048

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by: Wally L.11/16/2014

I just purchased a 2015 Toyota Tacoma 4x4 and installed the Curt hitch receiver purchased from etrailer. Great product and videos made it a snap to install. I also ordered the T-One wiring harness and this was a piece of cake to install and works great. I think I saved over $220 in parts and labor compared to similar items at the trailer companies in our area. 161156

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by: Corey J.07/07/2016

This product was exactly what I was looking for. The online tutorial was helpful in assisting me in making my decision; demonstrating how simple and straightforward installation would be. Having the flat plug mount available was an added bonus and will insure that the plug is not damaged once it has been installed. I am very excited about installing this kit. 269154

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by: sierra sam04/07/2017

Just received my hitch receiver, harness and lock pin and am amazed that all my items made it intact. The box it was shipped in sure didn't. Great job packing some tough items! I will install the receiver as soon as I can get the instructions which did not come with the item. Also, the link for the instructions on the web site does NOT work for my Mac. 366807

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by: Brandon B.06/29/2012

This is a very good quality wiring harness. Install was simple and, looking at the back of the truck, you will not even know it was there. The wires were plenty long enough for my Tacoma, and the connectors just snap in. I will probably rarely tow a trailer, but its nice to now have the ability when that is needed. is great to deal with. 46099

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by: Ken D.03/27/2011

This fitted perfectly and was very easy to install. You don't have to cut any wires or splice anything together. You just remove the taillight assemblies, plug the adapter plugs into the back of the light plugs and also truck wiring loom plugs, and reinstall the light assemblies. It's worth the money of not having to cut and splice. Very simple! 10477

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by: Charles C.08/16/2012

I ordered the items on Monday, and received them on that Wednesday afternoon. I had the trailer hitch and the wiring harness installed in about 2 hours. The hitch installation requires two persons, but goes easily. The wiring was as easy, but I made it more difficult by using loom to protect the wires. Probably took 30 minutes longer that way. 51938

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by: Russell P.04/23/2014

I ordered this trailer light harness from for my 2007 Toyota Tacoma because the factory plug stopped working. I received it in 3 days regular mail. Installed it in about a 1/2 hour and works great, this is my first order from but will be glad to use them again for any of my trailer needs. Thanks, 126752

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by: trailerman01/12/2012

I bought the trailer harnesses for two trucks, a Toyota Tacoma and a 2011 Nissan Frontier S. Shipping was quick and so was installation. They just plugged in to the truck's wire harness on the chassis and I was in buisness. No muss, no fuss, no cutting wires, no twisting wire nuts, no cussing or pulling hair. Just plug it in and trailer away. 29565

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by: RJ06/29/2017

Took off 1 star because shipping took 9 days to receive, other than that everything arrived in good shape packaging was perfect everything went together flawlessly after watching a couple of the very helpful videos. now all that is left is test it out on a trailer. I will definitely pick up all my trailer needs from etrailer, Thanks guys 401330

- 118496

by: Rich04/10/2012

I bought this wiring kit for my 2012 took about 90 minutes to install becouse the wiring is about 18 inches too short...after splicing in longer wires....product works restyled these trucks for the company needs to adjust the length of the wires leading to the passenger side....otherwise easy to install 36795

- 118496

by: Bobby M.06/01/2012

I purchased this trailer light hookup for my 2008 toyota tacoma. It was so easy to install and works exactly as stated. There are no cutting and splicing wires and running into trouble with your lights not working. This is an excellent product and excellent service from etrailers. Just installed and my lights work on my trailer. yeah!!!! 42369

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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring
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  • What is the Difference Between a 4-Way and 7-Way Trailer Connector
  • A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer brakes (requires a brake controller in the vehicle), and a reverse light or auxiliary power circuit. There are other types of connectors as well. I have included a link to our help article that shows and explains the various connector types.
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  • Brake Controller Installlation- 2013 Toyota Tacoma
  • It is not difficult to determine if your Tacoma has the tow package wiring in place. If your Tacoma has the OEM 7-way trailer connector installed, the vehicle is indeed prewired for a brake controller. The # 3040-P wiring harness would plug into the connector located near the emergency brake pedal as shown in the photo I edited for you. Make sure the white ground wire with the ring terminal is grounded to bare metal under the dash. If you do NOT have the OEM 7-way, the plug for...
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  • Towing Capacity of a 2013 Toyota Tacoma 4.0 Double Cab 4x4 with Factory Tow Package
  • I can help you out, no problem. What you are going to want to look at is the towing capacities of the truck. You need to know the gross combined weight rating. This is the most the vehicle, including cargo and occupants, plus the trailer can weigh. This information is usually in the owners manual or on a sticker in the door jamb. Looking at an online copy of the owners manual the 4 liter V6 model of the 2013 Toyota Tacoma with 4-wheel drive could have one of several capacities depending...
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  • Options for Adding Interior Lighting to Enclosed Cargo Trailer
  • For your enclosed trailer application I have several suggestions for adding interior lighting that you can control directly via a switch. Since your current 4-pole trailer wiring does NOT include a 12V auxiliary power feed that could power inside lights separate from the trailer's exterior lights, I suggest adding a separate 12V battery to the trailer interior and installing one or more LED-type lights that are bright yet highly efficient. In order to power interior trailer lights from...
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  • Adding 7-Way Trailer Connector to 2014 Toyota Tacoma without Factory Tow Package
  • It sounds like your 2014 Toyota Tacoma did not come with a factory tow package. What can happen sometimes is that on models that did not come with the factory tow package not all of the wiring or contacts will be present. You would either need to by all of the tow package parts or you would need to return the harness and install an aftermarket one designed for models without the factory tow package. If you want to add a 7-Way to the truck you would start by installing a 4-Way using #...
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  • Installing Trailer Wiring Harness on a 1994 Toyota Pickup
  • You can use part # 118379 and it will plug in to the tail light connectors behind the tail lights. If you have a T100 model, you will need to use some other parts. The harness for a T-100 model is part # 118496. Again, this harness will plug into the tail light connectors behind the taillights. I have added links to installation instructions and a video for the # 118379 trailer wiring harness which should be helpful. If you already have something for your truck, please write back...
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  • Installing 7-Way Trailer Connector on 2007 Toyota Tacoma
  • The Hopkins Multi-Tow trailer connector you referenced will fit a 2003-2007 Tundra, but not a Tacoma. If your Tacoma does not already have a functional 4-pole trailer connector like part # 118496, one will need to be added. From there, you can use a 4-pole to 7-way adapter # 37185. If your trailer does not have brakes and you do not need an accessory 12-volt circuit to provide power for any trailer mounted accessories that might need it, this set-up would work great for you. If your...
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  • Trailer Wiring Harness for a 1993 Toyota Pickup Truck
  • For a 1993 Toyota Pickup, the correct trailer wiring harness is # 118379. I have included a link to the installation instructions and a link to a video showing a typical installation. If you have a 1993 Toyota T100, you would need # 118496. I have included a link to the installation details for this harness as well.
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  • Malfunction Camper Shell Third Brake light with 4-Pole Wiring Harness on a 2009 Toyota Tacoma
  • If you connected the cab stop light to the wires that go after the converter box to the 4-pole connector, that is why you are having a problem. The signal for that wire is going to a trailer light that does not have separate turn and stop bulbs, so your camper shell is getting both brake and turn signals. You will need to find a dedicated stop light wire in the tail light wiring harness on the Tacoma to activate the third brake light on your Leer cap. You may be able to use the red wire...
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  • How to Install a Brake Controller in a 2015 Toyota Tacoma
  • If your 2015 Toyota Tacoma has a factory 7-way the correct install harness would be the part # 3040-P. This adapter plugs into the 5-pin connector on your vehicle's built-in brake control wiring harness. The harness is located underneath the dash, to the left of the steering column, taped to another harness near the emergency brake pedal. See install video I linked. If you do not have a trailer connector at the rear of your vehicle you would need to go a different route. You will...
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  • Trailer Wiring Harness for a 2011 Toyota Tacoma Access Cab
  • The definitive way to determine if a vehicle has a factory tow package or any other options is to have a dealer run the VIN number. Although if there is no 7-Way connector at the back of the truck, you most likely do not have a factory tow package. To install trailer wiring, you would need to use the custom fit vehicle wiring, # 118496. I have included links to the installation instructions and a video showing a typical installation. If you then wanted to add a 7-Way trailer connector,...
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  • Location of Brake Controller Factory Port on 2009 Toyota Tacoma
  • If your 2009 Toyota Tacoma has the factory 7-Way connector at the rear of your vehicle the factory brake controller port is located underneath and left of the steering column, taped to another harness near the emergency brake pedal. There will be a 5-pin connector that mates with the one on the Tekonsha # 3040-P adapter. I am including a picture that will show the brake controller factory plug location. If your Tacoma does not have the factory 7-Way connector, the vehicle will not have...
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  • Trailer Hitch Recommendation for 2014 Toyota Tacoma
  • Both the Curt Class III Trailer Hitch # 13323 and the Draw-Tite Class III Trailer Hitch # 75236 would work well for you. These Class III trailer hitches have a 2 inch receiver, 5,000 pound max towing weight and 500 pound max tongue weight. For installation, both hitches require the bumper brackets to be loosed or removed. I would go with the Curt trailer hitch, as it is more economically friendly than Draw-Tite. The trailer hitch will bolt into existing weld nuts on your truck's...
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  • Is Heavy Duty Flasher Needed for Trailer Turn Signals with Wiring Harness 118496, 2006 Toyota Tacoma
  • A heavy duty flasher is not needed. The trailer wiring harness # 118496 will operate the turn signals and other lights without issue provided the power draw from the lights does not exceed what the harness is rated for. As for the amperage rating you are correct. The instructions also state that the capacity is 7.5 amps total for tail lights and 2.1 amps per side for the brake and turn signals.
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  • Differences Between Curt # 13323 and Draw-Tite # 75236 Class III Hitches for 2009 Toyota Tacoma
  • The Curt # 13323 and the Draw-Tite # 75236 Class III hitches share the same weight capacity and installation procedure. The appearance and design of the two hitches are pretty similar. As far as quality goes, both brands are about equal. Given this, there's no reason why you couldn't go with the less expensive Curt model. If you were planning on towing with your Tacoma, you might also need the following: Trailer wiring harness, part # 118496 Ball mount, part # 2923 1-7/8 inch trailer...
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  • Trailer Hitch Availability for a 2011 Toyota Tacoma
  • Yes, I checked with Curt and trailer hitch # 13323 is a fit for the 2011 Toyota Tacoma models. To wire your vehicle for towing, you would be able to use custom-fit Tow Ready wiring harness # 118496. To equip your Tacoma for towing a trailer, you would also need a ball mount, a hitch pin, and a hitch ball. The recommended ball mount for your vehicle would be # 2923, which would place the hitch ball at the most common trailer height. To determine whether this would be appropriate for...
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  • Will the Tow Ready T-1 Connector Work on a 2008 Toyota Tacoma X-Runner With LED Tail Lights
  • The problems you have experienced tend to indicate a wiring problem on the trailer itself. Since the current converter you have is shorted out, you should begin by troubleshooting your trailer wiring before installing a new converter. Failure to do so could result in shorting out your new converter. Start at the trailer connector, make sure it is not damaged or corroded. Trace each circuit back to its fixture, looking for pinched or broken wires. Check the wiring insulation for worn...
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  • Trailer Brake Controller Wiring Harness Location on a 2012 Toyota Tacoma with Manual Transmission
  • Manual or automatic the brake controller port on the 2012 Toyota Tacoma should be in the same place. See instruction link for harness # 3040-P. It will only be there if the truck came with a factory 7-Way trailer connector. Otherwise you will need to hardwire in a brake controller and 7-Way. If your truck has the factory 7-Way, sometimes the connector for the wiring harness is actually behind a kick panel on the driver side of the vehicle and you will have to remove it to find the connector. If...
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  • Troubleshooting Tekonsha Prodigy P2 Brake Controller Installation on 2014 Tacoma Pickup Truck
  • You most likely have plugged the P2 brake controller # 90885 into the wrong factory harness assuming you are using the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers # 3040-P. Unplug the harness from the vehicle and everything should return to normal. If you have the factory tow package, then you can use this harness to plug in your brake controller. This adapter plugs into the 5-pin connector on your vehicle's built-in brake control wiring harness. The harness is...
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  • Installation of an Electric Brake Controller into a 2006 Toyota Tacoma
  • To install an electric brake controller, like the Prodigy P3 # 90195, in your 2006 Toyota Tacoma you can use the wiring adapter # 3040-P if you have a factory 7-way trailer connector on the rear of the truck. I've linked a video of the P3 with the adapter on a 2008 Tundra for you to take a look at. If your truck doesn't have a trailer connector you'll need to start by adding a 4-way. Use # 118496 which plugs in to the truck's wiring either behind both tail lights or near the frame...
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  • Installing Tekonsha Primus # TK90160 in 2012 Toyota Tacoma
  • A brake controller is not a vehicle specific item, so one way or the other, it can be installed in just about any vehicle. If your new Tacoma has the factory installed 7-way trailer connector at the rear bumper, you can re-use the # 3040-P Brake Control Wiring Adapter from your Tundra (if you used one). If not, you would need to purchase one. One end of the # 3040-P would plug into the rear of your Tekonsha Primus, the other end plugs into the factory connection port located between...
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  • Trailer Hitch, Wiring, and Accessories for a 2013 Toyota Tacoma Doublecab PreRunner
  • The Curt trailer hitch # 13323 will fit all models of the 2013 Toyota Tacoma including your PreRunner. I have included a link to a video showing a typical installation and a link to the instructions. If you plan on doing some towing I also recommend the etrailer ball mount kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a storage bag. For trailer wiring use # 118496. I have linked a video and instructions for the wiring as well.
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  • Turn Signals on Trailer Do Not Work When Towed By a 2006 Toyota Tacoma
  • The first step that I would take to troubleshoot this issue is to test the 4-way connector on your 2006 Tacoma for proper function. This will tell us if the issue is on your Tacoma or on the trailer. First, make sure the new wiring harness is properly grounded. It should be connected to a clean, bare metal surface on the vehicle frame or to the negative terminal of the battery. If the ground connection looks fine, you will want to use a circuit tester like part # 40376 to test each...
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  • Wiring Adapter to Install Hopkins Agility Brake Controller on 2015 Toyota Tacoma
  • If your Tacoma has the factory installed 7-way trailer connector at the rear bumper, it will be equipped with the brake controller connector under the dash. The connector will be located above and to the left of the emergency brake pedal, above the kick panel, as shown in the provided photo. For the Hopkins Agility brake controller, you'd need their # HM47815 brake controller adapter. If the vehicle is NOT equipped with the factory installed 7-way, it will not have the under dash connector,...
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  • Trailer Wiring and 4-Pole to 7-Pole Adapter for a 2010 Toyota Tacoma
  • For your 2010 Toyota Tacoma, I recommend using the Tow Ready Custom Fit Vehicle Wiring, # 118496, and our electric brake controller installation kit, # ETBC7. These items will provide all of the wiring connectors for installation of a 4-Way and 7-Way RV connector at the back of your Tacoma. I have included the instructions and videos for the custom wiring, # 118496, and # ETBC7 kit, that should prove helpful. To install and wire the 7-Way connection, plug the 4-pole adapter coming...
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  • 2009 Toyota Tacoma Hitch Installation Question
  • The bumper does not need to be removed when installing the Curt Trailer Hitch Receiver - Custom Fit - Class III part # 13323 on a 2009 Toyota Tacoma, but three of the bolts that hold the bumper in place will need to be loosened and two will need to be removed in order to properly mount the hitch. The loosened bolts will be re-tightened and the removed bolts will be replaced by supplied bolts upon completion of the installation. Because the bumper will not be properly mounted during this...
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  • Installing a 5-Way Flat Trailer Connector on a 2005 Toyota Tacoma
  • The easiest thing to do would be to install Tow Ready Custom Fit Vehicle Wiring, # 118393, first. There is no splicing involved with this installation. The T-connectors plug in line with the tail light wiring. I have included a link to the installation details and a video showing a typical installation. After the harness is installed, you can install the 5-Flat Vehicle End, # 20016. What you will need to do is cut off the 4-Way connector from the harness that was installed then splice...
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  • Troubleshooting 4-Way Installation With Turn Signal and Brake Lights Not Working 2010 Toyota Tacoma
  • With a plug-in harness on a 2010 Toyota Tacoma there are only a handful of possibilities and with that I can briefly go over them. I have also attached a FAQ article that gives troubleshooting tips when installing a 4-flat. Before starting the testing process, disconnect the trailer from your truck. The testing procedure requires a circuit tester like Quickee # 3808 to verify you have voltage running through the circuits. In the picture attached, I have the test locations (spots)...
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  • Brake Controller Recommendation for 2009 Toyota Tacoma
  • You will need to start with a 4-way (if you do not have one). For that you would want the # 118496. From there you would need to convert the 4-way to a 7-way so that you can install the brake controller. For that you will want the Brake Controller Install Kit and 7-Way Adapter part # ETBC7. I attached installation instructions and an install video for this product as well. For a brake controller I would recommend the Prodigy P2 Brake Controller part # 90885. This is our best selling...
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  • Installing Tekonsha P3 on 2006 Toyota Tacoma
  • There are two different installation scenarios for your Tacoma. If your Tacoma came from the factory with the OEM 7-way, the only other thing in addition to the brake controller would be the brake control wiring adapter, part # 3040-P. The 3040-P would plug into the connector located under the dash above and to the left of the emergency brake pedal as shown in the provided photo. If your Tacoma does not have a trailer connector of any kind, you would first need to install a 4-pole...
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Info for this part was:

Photos by:
Theodore B
Expert Research:
Michael L
Video Edited:
Andrew K
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Jacob T
Expert Research:
John H
Expert Research:
Adam R
Video by:
Kathleen M
Updated by:
Laura H
Installed by:
Cole B
Expert Research:
Lori W
Expert Research:
Jeffrey L
Test Fit:
Randy B
Video by:
Chris R
Updated by:
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Test Fit:
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