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

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

Item # 118498

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Tekonsha Powered Converter Custom Fit Vehicle Wiring - 118498
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  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • Powered Converter
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118498 or order online at etrailer.com. Free expert support on all Tekonsha products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.


  • All Info
  • Reviews (78)
  • Q & A (131)
  • Videos (7)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118498

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 behind tail lights
    • 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 behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.


T-One Connection Location Points Behind Tail Lights

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 within the jack storage compartment of your rear cargo area.


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.



118498 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite



118498 Installation InstructionsInstallation Details 118498 Installation instructions

This Product Fits The Following Vehicles

2011 - 2014 Toyota Sienna

2011 - 2014 Toyota Sienna

2015 - 2020 Toyota Sienna SE models



California residents: click here


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


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




Video Transcript for Trailer Wiring Harness Installation - 2013 Toyota Sienna

Today we're going to be taking a look at and installing the T-One 4-pole flat trailer connector and wiring harness for the 2013 Toyota Sienna, part number 118498. Right now we're going to take a look at the wiring as you pull it out of the package, so that way you'll understand where each wire goes, and how it all comes together. The yellow wire with the white on it will go to the driver's side. The red, brown, and the green with the four ends on it is going to go to the passenger's side. You will have your ground wire in the center, your power wire, the 12 volt that you will use with the black wire here, connecting it with the butt connector and taking it up to the front of the vehicle. We'll explain that here in a second.

You'll have your 4-pole wiring that will hang down on the back of the vehicle. Now, with your hardware to connect to your 12 volt up at the front of the vehicle, you're going to have to your ring terminals, your butt connectors, your fuses, your little fuse case here, as well as zip ties and the adhesive pad to attach the control module at the back of the vehicle. First thing we'll need to do is open up our rear hatch so we have access to the tail light assemblies. Here on the driver's side, you're going to see that the hardware that we're going to need to remove is going to be this bolt here, and this bolt here, so we can remove the tail light assembly, and get to the connectors. Go ahead and pull out on the top and the side to release tension on the assembly. Once you have it pulled out, go ahead and pull it straight back.

Depress the tabs in the middle, and remove them. Tab here in the middle, and then there's another tab in the middle of the white one, as well. Now let's go ahead and move over to the passenger's side and repeat the same process. Our next step will be to remove the interior panels so that we can access our wiring harness and slide it through. All right, now that we have our side panel on the passenger's side removed, we're going to remove this threshold on the back, as well.

To gain access to the bolts and hardware, we going to need to lift up on the metal clamps, or metal hooks. Go ahead and we're going to need to remove or pull up on the plastic tab here, just like so. It just pops out of place. Now that we have the hooks and tie downs removed, you do not need to remove them, you do need to remove the hardware though that's inside of them, that holds them in place. Go ahead and use a tool or a flat head screwdriver, or a trim tool, like we have. We're going to go ahead and pop this back part up.

Now we'll go ahead and use our tool or a flat head screwdriver to go ahead and pop the two pins, or pull tabs that are on the underside. When you hear them click out of place, you'll then go ahead and pull the panel to the front. This will give us just enough room so that we can get in the back side here to run the wiring through. Now we'll go ahead and take our yellow wire, unravel it, and we're going to stick this through the back side of the panel here to where we have access to the hole in the wiring. Maybe you can see my finger sticking through there. Just like so. Now, we'll go ahead and connect the 2 prong connector, leaving this part and the 4-pole from the factory to connect to the back of the driver's side tail light assembly. Now go ahead and connect the 2-pole that you have the connector on here back to the tail light assembly. Press it into place until it clicks and it is secure. Take the factory 4-pole and plug it back in as well. Once it's connected, line up the pin here, and the slide lock here. Once you have those lined up, go ahead and push it in, and then you're ready to reattach the factory hardware. Now with our red, green, and brown wires in hand, we're going to feed them back behind the panel here and up into the tail light assembly. Pull the panel out, reach back behind, grabbing the wires, and then we can feed them up and behind the panel, making sure that they don't get caught on anything. Now we'll go ahead and feed them up through the hole. All right, now we'll take and connect the factory wiring with the connector here, and the same on the red and the brown wire. Connecting the 2-pole with the 2-pole connector on the bottom until it clicks in place, and the 4-pole on the top, now fitting those two back into place. Make sure you tuck the wires back in so they don't get hung up. Now I'll just go ahead and locate that ground wire, and use the included self-tapping screw. We're going to mount this straight down to the bottom side of the body. The only two things we have left to connect now is going to be your 12 volt power wire to the front, and to place in the box. Now we'll go ahead and peel off the back to the adhesive tape, sticking it to the back of our control box. Once you've done so, remove the other side of the tape, and we'll place this right on the back side down here, up against the side of the sheet metal. Now we'll go ahead and zip tie up this extra wire. Now with our yellow wire still remaining on the back side here, we're going ahead and put it behind the tabs, so that when we put everything back in place, it doesn't have a pinch point. You'll have that yellow wire laying out across the back. We'll use a zip tie to tie it up and secure it so we can put it back in that back panel. Lets go ahead and press this side plate back in place. Lets go ahead and place back in that rear trim. You'll see that on here, you're going to have your slots where that trim will fit down inside of here. Make sure that your wire does not get pinched. Take and place the back side in, just like so. Now we'll go ahead and screw back in the hooks that we took out when we first started. Now we're all ready to run that power wire to the front of the vehicle. Now we'll go ahead and strip our wire for our 12 volt system, that way we can go ahead and connect it to the butt connector. Now that we have it crimped, we're going to go ahead and put some electrical tape over it just to add another level of protection against any corrosion getting inside. Now you can locate one of the two rubber grommets. A small one, located here, or behind the jack over here. You won't be able to see it, but it's going to be a bigger one here that we can cut a hole it and place a 12 volt power cord through. Let's go ahead and do so now. Now we'll go ahead and stick our 12 volt wiring through the hole here in the center, poking it through the bottom of the tab. Now go ahead and pull the excess of the 12 volt power wire to the under side of the vehicle, so we can now run it to the front, to the battery. Let's go ahead and roll up the excess of our 4-pole wiring, that way we can store it behind the panel with the jack and other hardware to get your spare tire out. We're going to leave it semi-accessible right now, that way once we're done getting the 12 volt plugged in, we can test our wires. Set it down like so, and then place the cover back over. All right, as you can see here, we're on the bottom side of the vehicle now, and you have your 12 volt wiring coming out of that grommet that we placed it through before. We're now going to run it to the front of the vehicle. First step in doing so is we're going to run it over the top of the exhaust hangar, and pull down the excess. Now you want to try and keep this as far away from the exhaust as possible, just because you know that wires could melt. We're going to go ahead and come up here to right above the suspension here, and then we're going to take a 1 quarter-inch loom clamp, part number A0250. We're going to place this up here to hold and retain our wire up above our exhaust. Now with our wire up above our rear coil spring, we're now going to pull the excess wire, again, over the exhaust, running it towards the front of the vehicle. There's going to be your brake lines that you can see here. We're going to follow these brake lines straight up to the front of the vehicle. Now we're going to come over on top of the gas tank, and behind this protective shield as we head towards the front of the vehicle. As you can see here, we moved from that last anchor point that we put it on, and we put the wire back behind this protective cover that's going to come over the top of the brake lines. We'll go ahead and anchor our line here and run it up top. All right, now we have our 12 volt wire that we ran up to the brake lines. We went ahead and ran down an extra piece of air tube that we had straight from the battery, down the brake lines and assembly, that way we can pull up our wire up to the top side, and hook it up to the battery. Just make sure that when you place down your air tube or hangar, or whatever have you, that you do come back behind this heat shield behind the exhaust. We'll go ahead and take this up, and pull it up top. We're going to go ahead and pull all of our wire up now. For good measure, come to the center of the battery with excess cable, then we'll cut it off. We'll take and strip it, prepping it for our butt connector. Once we've done so, we'll go ahead and turn the wire, and place on our butt connector. With our butt connector in place, we'll then take and crimp it. All right, now what we're going to do after we get that butt connector on is just go ahead and tape this off, that way we can prep our fuse wire and everything else, and get it connected up to the battery. We'll come back to this and finish it off. Just tape it off to the post here, that way we make sure we don't lose our wire back down into the back of the vehicle. All right, now that you have your fuse wire here, you can either cut it to where it's 60/40 or 50/50, whatever you're going to need more slack on the other side, because half of it will go to the 12 volt coming from the back of the vehicle, and the other half will go to the terminal. Go ahead and strip the wire, and go ahead and put a clean line of tape around it. All right, now we can go ahead and connect this side to the battery. Now tighten it down once you get the ring terminal back in place, placing your cover back over the top. Now that we got our battery connected, we're going to tape off some of the excess, that way we don't have any dragging out the bottom side of the vehicle, and making sure that everything's taped off and zip tied up before we place our fuse in to touch our wiring. Now we'll go ahead and place in our fuse, put the protective cover over the top of it, making sure that it's fully sealed and water tight, and we'll go ahead and stick our zip tie through here, and place a zip tie around it just to keep it water tight before we test our wiring. Now we'll go ahead and connect our wire tester, clipping onto the ground, and then we will test the running lights, the right turn signal, the left turn signal, and the brake lights. All right, now we're ready to hit the road since our wiring has been tested. That will conclude our look in our installation of part number 1180498, the T-One 4-pole flat trailer connector and wiring harness on our 2013 Toyota Sienna.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118498

Average Customer Rating:  4.7 out of 5 stars   (78 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.

- 118498
by:
2013 Toyota Sienna

Installation was seamless. I love how etrailer includes an installation video (seemingly) for all their products. The most impressive thing was how quickly it arrived. Less that 48 hours! 672683



- 118498
by:
2011 Toyota Sienna

I had a buddy that was a Stereo installer for a long time install the wireing. It looked easy for him but if i was doing it i would have been a bit confused. Other than that it has worked awesome. 48210



- 118498
by:
2011 Toyota Sienna

The hitch fit perfectly, looks great on the van and the wire harness installed easily. One suggestion before installation is watch the videos here on etrailer.com and it makes your installation easier! 678255



- 118498
by:
2011 Toyota Sienna

Easy install on 2011 Sienna LE. Got power from accessory plug instead of running to battery...15 minutes start to finish. Thanks etrailer.com! 617812



- 118498
by:

I bought this unit to replace the exact same unit I purchased 3 years ago. The Brake light connecter on the passenger side corroded and lost connection. I tried cleaning it, but had no luck. I called to see if a replacement connection could be purchased so I could just snip out the bad one and solder in a new one. No replacements are sold so I had to buy and replace the entire unit. Even though the instructions do not say anything about it, make sure you lather up all the connections with a good Dielectric Grease to keep this from happening to you. 85107


Comments

I imagien you had some water infiltration. There shouldnt be any corrosion. Ive opened vehicles 50 years old to find similar connections very capable of conducting electricity. That being said, there are drain tubes in the body the, so maybe Your grease idea is well warranted.

-- comment by: Bill - 07/11/2013

1730

- 118498
by:
2018 Toyota Sienna

Heads up product doesnt fit a 2018 Toyota Sienna Limited. The 2018 has different connectors to tail lights 580275


Comments

As we list in our online fitguide, there are two different wiring harness available for the 2018 Toyota Sienna. The SE model would use the # 118498 harness you purchased, while all other models EXCEPT for the SE including your Limited model would use the # 118648
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$50.89
. So, for your vehicle youd want to go with the # 118648
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$50.89
.

-- Mike L - 11/06/2018

45457

- 118498
by:
2014 Toyota Sienna

Just installed this wire harness. It was very straightforward thanks to the videos on the website. I soldered the wire connections to the positive and used a self adhesive rubber tape so I would have a more reliable connection. The hardest part I had was finding a suitable route for the + wire provided. There is alot of pinch points and hot exhaust pipes to go around. The van is low to the ground so it needs to jacked up while working on it so that makes it more challenging as well. Just got back from a 400mile trip and it works well so far. Dont forget also to buy extra zip ties as well. The 4 wire connector provided was extra long which works well. Also like the way the wire stores out of the way when not in use. 94069



- 118498
by:
2013 Toyota Sienna

2013 SIENNA AWD MINIVAN: INSTALLED TRAILER HOOKUP WIRING HARNESS AS PER DIRECTIONS. ONLY EXCEPTION, I RAN THE HOT WIRE INTERNALLY TO BATTERY VIA FISHING IT DIAGONALLY UNDER THE CARPET TO CARPET EDGE TRIM ON DRIVER SIDE. FROM THERE, I TUCKED WIRE UNDER CARPET EDGE TRIM TO FIREWALL. THEN I RAN WIRE UNDER CARPET EDGE ALONG FIREWALL UNDER PEDAL, AND POKED WIRE THRU FIREWALL AT EDGE OF AN EXISTING RUBBER GROMMETED PASS THRU SHARED WITH FACTORY WIRING HARNESS. NOW ON ENGINE SIDE, I RAN THE WIRE AROUND THE AIR INTAKE HOUSING TO BATTERY. EASY----- ONCE I HAD FOUND/DECIDED UPON THE BEST WAY TO ROUTE THE HOT WIRE. 106074



- 118498
by:
2011 Toyota Sienna

Just reordered this after the first one I had died. My 7-way was mounted too low on my already low riding minivan scrapped on a curb. When it did it must have caused a short because the fuse had blown and the controller box had gone bad. I reordered the same to fix the controller after remounting the new 7-way at a better location. It appears there is a new version of this controller. What was shipped to me does not match what is in the pictures. It is now actually nicer, all the wires come out one side and there is a screw terminal to secure the controller to your chassis. The wire color coding is an exact match to the previous version so it made for a very simple replacement. Great product and service. 188957



- 118498
by:
Toyota Sienna

2015 Sienna SE. Install took about 2 hours. Didn't need to remove the passenger side taillight. You can reach up to those plugs through the hatch panel where the jack is. Be careful when removing the long interior panel in the storage well, it slides up to come out. There are three hooks with screws shown in the directions, and six plastic panel clips along the top. You can easily pry them up with a panel removal tool. Had to remove the driver's taillight. Two screws and then slide in back toward the rear of the car. It will "pop" out so best to have an extra set of hands so you don't drop it. Did not have to remove the inside panel on the drivers side. I cut the driver's side harness's yellow wire and fished it down from the taillight to the storage well, then reconnected with additional in-line connector. I installed this along with a Draw Tite Hitch. We cut a slice in a rubber drain grommet in the middle of the storage well and dropped the trailer plug through there and out the underside of the vehicle and attached to the metal plate on the hitch, for a permanent outside plug without having to pull the plug wires out through the rear hatch door when using. Added some permatex rubber sealant to the grommet to seal it up, and then reinstalled the full plastic underside panel to help protect any road grime getting up to the grommet. Looks great. 237817



- 118498
by:
2014 Toyota Sienna

This is a great product. The wiring was thick and didn't feel like a cheap Chinese product. I'm happy with this wiring harness. I installed it on my 2014 Toyota Sienna. Even though the instruction video is not updated for the 2014, the instructions it came with contained a picture of the shroud and where to cut, which was the only difference (shroud size, only one cut needed on the 2014) between the 2014 Siennas and the ones from prior years. You'll see in the picture attached, I purchased the loom to protect the wire. I would recommend doing the same. The only thing that would have made more sense to me is if the box attached to the drivers side since that is where the battery is. There would be a lot less wire to route under the vehicle. Other than that, it worked on my first try and I'm happy with that! :) 146452


Comments

Its been a year already? Wow! Since I dont have a truck, I use my minivan and aluminum trailer frequently. I have no regrets buying this wire harness and would buy again.

Kelly H - 08/12/2015

14174

- 118498
by:
2014 Toyota Sienna

Just installed this on my 2014 Sienna last weekend and haven't had a chance to test the lights on a trailer, so I can't review the functionality. I can say the install was very easy on the interior of the vehicle with the included connectors. However, I found running the power wire under the car to the battery to be a huge pain. I would reccomend either jacking up the whole left side of the vehicle (I ran my wires on that side), or even better - use a lift. What took me an hour with the van on the ground would take 10 minutes with a lift. 186716



- 118498
by:

Installation couldn't be easier, a hand full of screws and bolts, a couple of plugs and some quality time stringing wire and it's done. A couple of points that I'd make is that the cargo hooks that the instructions and the video on this site say to remove are held in place by 10mm bolts hidden by plastic covers. That isn't mentioned in either instruction method so it took me a bit to find them. The other point is that all of the door sills snap into place so it's easier to pop them out and follow existing wiring down the passenger side and out through an existing grommet behind the glove box than to route the battery wire along the frame. Pop the rear cup holders up and out so you can reach behind the plastic fender cover to pull the wire between the rear sill plate and the jack storage. Start to finish install took less than an hour 139724



- 118498
by:

This item was so easy to install. Thanks for the help with ordering. 721131



- 118498
by:

Between the online video and instructions, this kit installs easily for someone with average technical ability. 720657



- 118498
by:

Excellent comp 707834



- 118498
by:

Exactly what we ordered. Fit perfectly. Easy to install. 707449



- 118498
by:
Toyota Sienna

Perfect fit for my Toyota Sienna. 705768



- 118498
by:
2014 Toyota Sienna

Read other reviews. 2014 Sienna install - If you don’t have a car lift, definitely route the wire through the passenger side of the interior. There’s a gromet behind the glove box to get you in the engine bay. Otherwise was a straightforward install. 683195



- 118498
by:
2018 Toyota Sienna

The information and resources on your web page are truly outstanding :) It made ordering the right products seamless. Order executed and products received i.e. one happy customer........ Remarkable 670986



- 118498
by:

Easy to order and fast delivery time . second time ordering and always happy with the product and fit 645132



- 118498
by:

Perfect!! 622106



- 118498
by:
Toyota RAV4

Great videos to install. I have purchased two. Rav4 and Sienna. Both have worked very well with no issues. Product support from retailer was great in helping ensure I had all of the right mounting parts. 604737



- 118498
by:

Worked great and easy to install 600871



- 118498
by:
Toyota

It works just the way they said it would. The only problem was hooking up the power wire. Toyota builds siennas LOW. A friend helped by letting me use his lift. The directions were accurate and simple. 570438



- 118498
by:

Good service appreciate within couple of days I received the kit Thanks 556325



- 118498
by:
2013 Toyota Sienna

Quality product, fabulous video instructions. Came with all the "required" parts. The battery connection requirement made the installation difficult, but manageable. I added flexible conduit to the wiring on the passenger side. Applied silicone sealant to the power entry location. Added a stainless self tapping screw and wire clamp. Used a fish tape to find and pull the battery power cable through the channel above the gas tank and rear HVAC assembly. 539348



- 118498
by:
2013 Toyota Sienna

Worked as expected. The van was going in for service, so I paid the shop to install it. They had no problem. 529176



- 118498
by:

Product is working as expected. Was easy yo install. Would recommend it 527480



- 118498
by:
2014 Toyota Sienna

Product worked as advertised. Instructional video with my exact vehicle was instrumental in successful installation. 524425



- 118498
by:
2013 Toyota Sienna

Great product, good instructions and easy to install 495150



- 118498
by:

Excellent product at good price. 469299


Comments

Good product

Florinel N - 01/25/2019

48904

- 118498
by:

Does exactly what I need. 462333



- 118498
by:
2013 Toyota Sienna

Instructions were easy to follow. Routing of the wires inside the van wasn't too bad. Just the right amount of power wire to make it front to back on my 2013 Sienna. It would be nice if the cable ties were a bit longer to ease attaching them to other wire looms to make it look more factory. I ended up adding heat shrink tubing around all the connections to stiffen them up and protect them. 449294



- 118498
by:
2012 Toyota Sienna

Product very easy to install, the only issue is that you have to lead a wire to a battery... other than that is very simple and it works 412651



- 118498
by:
2017 Toyota Sienna

excellent kit. the second one I've installed. easy instructions. 407280



- 118498
by:
2012 Toyota Sienna

Great buy. Easy install. 406902



- 118498
by:
2011 Toyota Sienna

The harness worked perfectly on my 2011 Sienna. All of the appropriate pieces and parts were included and the instructions and video made the installation easy. No negatives at all. 385004



- 118498
by:
2014 Toyota Sienna

Very easy to install, video was a great resource for installation. I had just enough power wire to run to the battery, make sure you don't waste when you run the power wire. 380316



- 118498
by:
2017 Toyota Sienna

I am very happy with the Customer Service I got this year and the previous years. There was an issue with the product this time, but They took care of it very quickly. The speed and professionalism of Lisa D and couple other folks was beyond expected. I am very happy with etrailer and I shall be back for more. I will also recommend all my friends to buy through etrailer for all their towing needs. Also the installations videos are amazingly helpful. I was able to do this with almost no help from others. 359184



- 118498
by:
2011 Toyota Sienna

Both the Hitch and the Wiring Harness fit my 2011 Toyota Sienna. The free Shipping was prompt and well appreciated. Thanks eTrailer. 282496



- 118498
by:
2011 Toyota Sienna

Very good service, I received the parts quickly. All the parts fits perfect, thank you. 267362



- 118498
by:

Trusted product, Ordered from Etrailer.com do to the fact local supplier said it would be 3 weeks ... Yes 3 weeks. I ordered this product on Thursday afternoon and had it here on Monday.... Outstanding Service ..... 258473


Comments

Products were for a customer I only installed them. They are working fine.

Beach A - 01/19/2018

33362

- 118498
by:
2012 Toyota Sienna

Fairly easy to install. I wish the video had more adequately addressed how to get the wiring into the engine compartment. I had to reroute the black wire several times. Other than this small issue, I would highly recommend buying this harness and a hitch and saving 200 dollars by installing all of this yourself. 256607



- 118498
by:
2011 Toyota Sienna

I was not looking forward to put a trailer wiring harness onto my 2011 Toyota Sienna until I stumbled across your video on how to install one. Once I was finished watching the video I knew that this is something I could do with ease. Once I received the wiring harness I orderd from etrailer.com and installed it I was right on how easy it really was. I REALLY liked how I could go step by step which the gentlemen in the video to install this. Great idea and great product! 242390



- 118498
by:
2011 Toyota Sienna

Pretty straightforward procedure. I followed the directions and went with previous reviewer's comments on running the power wire up the passenger side trim. This worked perfectly. I took the rear cup holders out to fish the wire through that area. The other areas went easier and I used a very flimsy metal coat hanger. There is an access point on the firewall behind the glove box, so I used the electrical tape to attach the power wire to the (now trimmed down some) hanger and just poked it through, then ran the wire across the top of the engine compartment to the battery. No problems encountered, but since I get a lot of interruptions it took 3+ hrs. 203754



- 118498
by:
2012 Toyota Sienna

Great. 195270



- 118498
by:
2011 Toyota Sienna

The wiring kit sure made doing the wiring job much easier. The included instructions weren't the best, but were helpful (They could have spent a bit more time on them). Overall, the kit probably saved 2 hours of running my own wiring, and for that, it was worth it! 191710



- 118498
by:
2011 Toyota Sienna

Shipped in a decent amount of time. The hitch and wire harness were very easy to install. On the etrailer website were video how to's which were helpful. Overall very satisfied with the product and price. Would have easily paid 100-200 more dollars by taking it to u haul and getting a "professional" install. 185849



- 118498
by:
2014 Toyota Sienna

Easy installation and price of product beats most competitors out there! 185206


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  • Recommended Trailer Hitch for 2019 Toyota Sienna for Ground Clearance
  • The trailer hitch I recommend for your 2019 Toyota Sienna is the Draw-Tite Trailer Hitch # 76112 because if you plan on towing, this hitch is rated for weight distribution and the similar hitches are not. When we test fit the Draw-Tite Hitch # 76112, Curt Hitch # C13343, etrailer.com Hitch # E98853 and EcoHitch # 306-X7255 on a 2019 Toyota Sienna we found that each of them have 13 inches of ground clearance, and with the exception of the EcoHitch, have a 525 lb tongue weight capacity...
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  • Trailer Hitch Recommendation for 2019 Toyota Sienna
  • Yes, the etrailer.com hitch part # e98837 will fit and work well on your 2019 Toyota Sienna. This has a 2 inch opening and great towing capacities as well. For trailer wiring you'd want the part # 118648 as long as you don't have an SE model or part # 118498 if you do have SE model. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch...
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  • Recommended Trailer Wiring And Brake Controller For 2017 Toyota Sienna
  • The best way to get a 7-way trailer connector on your 2017 Sienna is by first installing a 4-way connector like part # 118498 if it is an SLE model or part # 118648 for NON-SLE models. You will then need to install a 7-way trailer harness like # ETBC7. This plugs into the 4-way and you can hardwire the additional wires as needed. Many times a 7-way is needed because the trailer has brakes which would also include needing a brake controller in the vehicle. If that is the case, I...
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  • Recommended Trailer Hitch for Best Ground Clearance on 2017 Toyota Sienna
  • Because of the way it mounts to the vehicle frame, the Draw-Tite Class III Max-Frame Trailer Hitch Receiver # 76112 is actually going to have the best ground clearance when compared to the other trailer hitches confirmed to fit your 2017 Toyota Sienna, including the 1-1/4 inch options. That is because this particular hitch installs higher than the alternatives to provide a hidden look with the cross tube, and this in turn will offer better ground clearance. I have attached a demonstration...
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  • Recommended Best Trailer Hitch Receiver for Ground Clearance on 2018 Toyota Sienna
  • There is not a minimum clearance required by law for a trailer hitch, so you simply want to make sure you are able to travel without bottoming out your receiver. For instance, the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13105 has a dimension of 12 inches from the inside top of the receiver which means approximately 9 inches from the ground to the bottom edge due to the lower the side brackets. If you are concerned about that ground clearance restriction, then...
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  • Trailer Hitch and Wiring for a 2018 Toyota Sienna with All-Wheel Drive
  • Yes, Draw-Tite trailer hitch # 76112 will fit your all-wheel drive 2018 Toyota Sienna. I have included a link to a video showing an example installation for you. If you plan on doing some towing I recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag. If the ball mount kit does not have the...
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  • Trailer Wiring Harness Recommendations for a 2012 Sienna XLE AWD
  • Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, # C56106, is a fit for your 2012 Toyota Sienna. You can also use T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118498 or Hopkins Plug-In Simple Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # HM11143495. All of them install and function the same way. I prefer # 118498 because we hear about less issues with the Tekonsha brand. I have linked a video showing an example installation...
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  • Does etrailer.com Hitch part # E98853 Fit 2013 Toyota Sienna AWD
  • Yes, the etrailer.com hitch part # E98853 that you referenced does fit your 2013 Toyota Sienna all wheel drive. I attached an install video for this hitch for more info for you to check out as well! Then for wiring the kit I recommend is the Tekonsha part # 118498 which is easy to install and very reliable.
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  • Does Draw-Tite Hitch 76112 Include All Parts to Complete Installation on 2017 Toyota Sienna SE
  • The majority of trailer hitches we sell, including the 2-inch Draw-Tite Max-Frame hitch # 76112, come complete with all required mounting hardware and detailed installation instructions. Those instructions, which are linked for you, include a listing of the tools needed. I also linked for you an installation video showing this hitch installed on your exact same 2017 Sienna. You only need a wiring harness if you intend to tow a trailer that has lights, or if you want to use any other...
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  • Recommended Towing Setup for 2018 Toyota Sienna
  • On your 2018 Toyota Sienna, the bumper does not get trimmed at all when installing the Curt Trailer Hitch Receiver # C13343. Only the underbody panel gets trimmed. I've attached a video to assist. The wiring harness needed depends on the trim model. If you have the SE trim then you will need the harness # 118498 , where all other models will use the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118648. You will need to run the 12V power wire to your battery,...
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  • Trailer Tow Package For 2011 Toyota Sienna
  • On your 2011 Sienna, you will first need a 4-way connector like part # 118498. You will then need part # ETBC7 to convert the 4-way to a 4-way and 7-way trailer connector to tow your pop-up with brakes. To use the brake controller like part # 90195 in both vehicles you can use part # 20127. This is a harness you will hardwire on your vehicle and then have a plug-in harness that plugs into the back of the brake controller. The # 90195 comes with one so you will only need one additional...
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  • Recommended Wireless Brake Controller for a 2018 Toyota Sienna
  • We have the perfect solution for you! The Curt Echo Mobile Trailer Brake Controller # C51180 plugs directly into a 7-Way connector and is controlled through a bluetooth connection to your Apple or Android. The Echo Smart Control App is free and compatible with an Apple OS that is 8.0 or newer or an Android OS that is 4.4 or newer. If you currently only have a 4-Way connector on your 2018 Toyota Sienna, like the T-One # 118498 for an SE or T-One # 118648 for a non-SE, then all you need...
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  • Best Trailer Wiring Harness for a 2018 Toyota Sienna
  • The best trailer wiring harness we have for your 2018 Toyota Sienna is going to be the T-One Vehicle Wiring Harness part # 118498 if you have the SE model with features such as daytime running lights, 4.2" color multi-information display, and a premium audio system. If you have the LE or XLE then you will want to use the T-One Vehicle Wiring Harness part # 118648. They both install in the same way which requires you to remove the tail light housings, plugging in the t-one connectors,...
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  • Recommended Trailer Tow Package for 2018 Toyota Sienna for Pulling Camper
  • For your 2018 Toyota Sienna I recommend first starting with the etrailer.com Trailer Hitch Receiver # E98853 because of its capacity for towing and ease of use for accessories like a bike rack. It has a hidden crosstube for the cleaner look and also for increased ground clearance. I've attached a photo to help. Then for your trailer wiring I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118498. This harness will connect to your factory wiring located...
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  • Hitch Recommendation for 2014 Toyota Sienna
  • For a trailer hitch confirmed to fit your 2014 Toyota Sienna with a concealed crosstube the hitch I would recommend is the Draw Tite part # 76112. This hitch costs a bit less and if you were to ever want to carry a bike rack this hitch would not require you to use a stabilizer strap like the Curt requires. I attached an install video for this hitch for you to check out as well. For trailer wiring I do recommend the Tekonsha kit # 118498 as this brand is the most reliable option we carry....
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  • Recommended Items To Make 2018 Toyota Sienna Tow Ready
  • Yes, if you are going with the Draw-Tite Max-Frame Trailer Hitch Receiver # 76112, add a transmission cooling is always a plus to preserve the life of your vehicle. I recommend the Derale Series 8000 Plate-Fin Transmission Cooler Kit # D13502. This is one of the more popular cooling systems available, the radiator-style, plate-and-fin heat exchanger provides increased surface area so that fluids can spread out along the finned chambers to cool faster. The overall dimensions are 11" wide...
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  • Will Curt Class III Trailer Hitch for 2011 Toyota Sienna tow Small Boat Trailer
  • The Curt Class III trailer hitch part # C13343 that you referenced is a confirmed fit for your 2011 Toyota Sienna and has a 3,500 lb trailer towing capacity so a 1,200 lb boat wouldn't be an issue. For trailer wiring you'd then want the T-One kit part # 118498 which is a confirmed custom-fit harness that would work well. Since you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop...
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  • Parts Needed to Add 7-Way to 2014 Toyota Sienna for Towing
  • We do have a 7-Way wiring connector that you can add to your 2014 Toyota Sienna so you can tow your pop up camper! You do need to already have a 4-Way though. If you don't have a 4-Way connector then I recommend going with the Tekonsha T-One # 118498 because of how reliable it is. This tees in behind your tail lights and draws power directly from your battery via the black power wire. Attached is an installation video. Then if you only need the lighting functions I recommend installing...
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  • Brake Controller and Wiring Recommendation for 2014 Toyota Sienna
  • You will need to start with a 4-way (if you do not have one) on your 2014 Toyota Sienna. For that you would want the # 118498 which is a confirmed fit. 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...
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  • Trailer Hitch and Wiring Recommendation for 2018 Toyota Sienna
  • For your 2018 Toyota Sienna the trailer hitch I recommend is the etrailer.com hitch part # e98837 as it has the best towing capacities, and has a concealed crosstube which means it will be less visible than other hitches. Now for wiring you'd want the # 118648 for if you have a non-SE model or the part # 118498 for if you do have an SE model. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch...
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  • Trailer Wiring Harness Options for a 2011 Toyota Sienna
  • I currently show 2 wiring harnesses for a 2011 Toyota Sienna. First, from CURT, we have the Circuit Protected T-Connector Vehicle Wiring Harness, # C56106. I have included a link to the installation instructions for you. The other is the Tow Ready T-One Connector w/Upgraded Circuit Protected ModuLite, # 118498. I have included a link to the installation details and a link to a video showing a typical installation for you. Both of the available wiring harnesses connect to the vehicle...
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  • Why Does Trailer Wiring Harness have to Connect to battery on a 2011 to 2016 Toyota Sienna
  • Powered trailer wiring harnesses are not tested or rated for any alternate installation method. Installing it by attaching the power wire to a power outlet 12 volt wire will void the warranty. Also many times those outlets are not the only component on the fuse and/or there could be a relay that has other functions. So if the wiring harness is drawing power and whatever else is fused with it or that uses the same relay is drawing power then it can cause more costly electrical problems. You...
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  • Parts Needed to Add a 7-Way Trailer Connector to a 2011 Toyota Sienna
  • To start, you would need the T-One Connector w/Upgraded Circuit Protected ModuLite, # 118498, to first provide a 4-Way flat trailer connector at the back of your 2011 Toyota Sienna. I have included a link to the installation details for reference. With the 4-Way installed, the next best solution would be to install a 4 and 7 Way Installation Kit # ETBC7. This will provide a 7-Way connection (while still retaining the use of the 4-Way flat) and it provides all of the wiring and circuit...
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  • Recommended Hitch Receiver Compatible with 2016 and 2017 Toyota Sienna
  • We offer several options that fit both the 2016 and 2017 Toyota Sienna. You have the choice between a Class II hitch and a Class III hitch for these vehicles. Class III hitches have a greater weight capacity and can tow a wider variety of vehicles. If you plan on towing heavier loads at any point, I recommend going with a Class III hitch. I've attached a helpful article on trailer hitch classes for you to check out. Please note that your towing capabilities will still be limited by the...
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  • Trailer Hitch Recommendation for a 2012 Toyota Sienna for Trailer Towing and Bike Rack
  • Since you want to tow a trailer and use the hitch for bikes, I recommend a Class III trailer hitch for your 2012 Toyota Sienna. A Class III trailer hitch with a 2 inch receiver is going to afford you more options for accessories than a smaller hitch. The receiver on any of the available trailer hitches will be directly below the rear bumper on the van, including the Curt hitch, # C13105, that you have referenced. Because the vehicle sits so low to the ground, ground clearance can be...
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  • Parts Needed to Install Prodigy RF Brake Controller with 2011 Toyota Sienna
  • Here's what you need to install the Prodigy RF brake controller part # 90250 on your 2011 Toyota Sienna. You need the controller, a 4-way harness part # 118498, the adapter part # 37185, a circuit breaker # 9510, and then a length of 10 gauge wire like part # 10-1-1 (sold by foot) to go from the 7-way to the positive battery post. Since you are running two wires to the positive post of the battery you might instead want the part # 10-2-1 which is a double bonded 10 gauge wire set that...
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  • 5 Pole Trailer Wiring Harness for towing Boat Trailer with 2013 Toyota Sienna
  • To install a 5-pole flat trailer connector on your Sienna, you have two alternatives. You can use the modulite kit, part # 118498 that would plug inline with the connection between the vehicle wiring harnesses and the rear of the taillight assemblies and a power wire would be ran to the vehicle battery. You'd then use an adapter like part # 47515, with the extra wire on the vehicle side getting tapped into the circuit that feeds the reverse lamps. Your other option would be a hardwired...
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  • Adding a 7-Way Trailer Connector to a 2012 Toyota Sienna
  • For your 2012 Toyota Sienna Tow Ready wiring harness # 118498 will establish the 4-Way like you said. You can use # 30717 as a 4 to 7-Way adapter but I recommend # 37185 because it will give you both a 7-Way and still retain the 4-Way. The white wire will be the ground and the black wire for 12 volt power. Since the trailer does not have electric brakes, the blue wire can be taped up and stowed out of the way. The last wire (either purpler or yellow) is normally for reverse lights and...
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  • Does etrailer.com Hitch E98837 Fit 2015 Toyota Sienna SE
  • Yes, the etrailer.com hitch part # E98837 is a confirmed fit for your 2015 Toyota Sienna SE. It fits well with the different lower bumper. For trailer wiring you'd then want the Tekonsha kit part # 118498 which has a very reliable converter box and installs easily by plugging inline with the taillight connectors. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one...
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  • Recommended Towing Setup for 2016 Toyota Sienna AWD
  • The Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # 75237 is a great option for your 2016 Toyota Sienna. This hitch receiver has the hitch pin hole that is recessed 4-1/2 inches behind the outer bumper, so most ball mounts will allow proper clearance. If you want a cleaner look with better ground clearance, I recommend # 76112 which has 4 inches clearance from the pin to the outer bumper. Then you can use a ball mount like # BWTS10035B which will work well...
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