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

Starting at 5:15 out of 12:08 hitch installation you tube video by MasterJacks, followed his guide. Broke plastic installation pins, bought Ford plastic pins at Autozone, Toyota pins not close to OE. Used adhesive backed hook and loop fasteners to mount electronics box. Everything works.1635680

by: GWR05/12/2023

Wiring harness connected right up to the 2022 Toyota Sienna. It comes with some Tape and mounting instructions that didn't quite line up with a Sienna that had a spare tire. I don't like 2 sided tape because I don't believe it will last in a hot car. I got a couple of self tapping screws and mounted the plastic box to the aluminum spare tire mount. Also used a self tapping screw to attach the ground to the aluminum spare tire mount.1576465

Just got it 2 hours ago and it is all installed. Did a hitch receiver as well. Wiring went good. Used the rubber plug to run it through so it’s permanently tied to the receiver. Thanks!1590895

by: Tomas04/26/2022

Installation was a breeze. No wire splicing. Plugged into my 2021 and it's been working great!1290817

Tomas

4/27/2023

still going strong!

by: Daniel07/11/2023

Works great on my Sienna. Easy install once I got over popping interior panels off my brand new car1621414

by: George 12/19/2022

Hooks right up to an open connector behind the spare. There’s a rubber plug that goes through the bottom of the car, I used a knife to cut halfway through it and just slid the harness into the middle of the plug if that makes sense. Ran the wires to the hitch without a problem. Dropped the plug back in and it basically molded around the harness wires. Hooked up a trailer and it worked great1486825

Easy installation with clear instructions. Very well packaged. Arrived very fast and the customer service was great! I knew where my product was at all times and when it arrived at my house.1577835

by: Nasif03/04/2023

Direct fit to factory wiring harness. Easy to install. Using for a year now without a single problem1530165

So far so good. Works on my small lawn mower trailer just fine1586077

by: Jerry03/16/2022

Easy install, all plugs matched my OEM connectors1273171

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by: Andrew03/01/2023

Easy to install, works exactly as advertised. Had to modify the installation slightly to clear the spare tire, but it was easy.1527597

It takes a 5 minutes to complete a gob.
On a package picture it shows different type of wire harness but inside is exactly what I needed.
Thanks again.1491661

by: Diane 07/25/2022

Toyota Sienna

Incredibly easy install. The Sienna has a wiring harness behind the spare tire so it was plug and play. I was able to use one of the rubber grommets to route the wires to the hitch.1337516

The T-One harness from eTrailer looks great. The custom plug fits the Toyota Sienna 2022 Platinum harness making the electrical hook-up easy.1410900

by: Kisha08/02/2022

Solid trailer hitch, works great. Easy to put on. I like that there are places we can attach ratchet straps for our rooftop kayaks too.1350521

It fits and works. I had to search YouTube for an installation video. Unfortunately for me, my 2022 Sienna does not have a spare tire compartment so the most challenging part of the installation was fighting with the panel.1341380

Extremely easy to install on 2021 Sienna. Just plugs right into existing socket and then ground to existing bolt under the spare tire.1022419

Barry B.

4/27/2022

After a year, this adapter continues to work perfectly.

Easy to install. Would be great if the grommet that goes through the body would be supplied with the kit.1441378

Relative easy install plug in, route wire, secure ground. Pretty straight forward. Now I need a trailer to hook it to. Prepping for a move with a U-Haul trailer. However my flat 4 pin trailer wiring test plug indicates it should be correct.1295880

Works fine, but install should’ve been easier - instructions had me taking way more apart than was necessary, because they didn’t seem to be specific to my vehicle. Indicated factory harness was near rear seats when it was in fact right next to the lift gate.1343071

Great website, better than most others out there since it includes detailed information including videos as to how to install the equipment and trailer light system.. Quick delivery, great communication throughout the process. Would definitely recommend etrailer to anyone and everyone I know.1300441

Super simple to install. Works as expec ted.1544565

The 2021 Sienna has the connector underneath the spare tire, two mounted screws perfect for the grounding wire, and a rubber cover for easy access to underneath the vehicle to route your 4-way.

The trailer hitch receiver was easy to install, but the instructions were also wrong (removing the cover underneath the car was on the driver side, and not the passenger side). 5 stars as long as they get the instructions fixed so people don’t unnecessarily tear apart their car!1040998

by: Lance04/15/2022

Toyota

This product was simple amazing! I was shocked at how easily it installed - actually plugged into a pigtail hidden in the sidewall of my Toyota Sienna! I would rate this device as a 10 if that were possible! Toyota doesn't want you to know about this product because they don't want you pulling anything with a hybrid! Toyota actually started offering it - then quickly discontinued it! So glad this product was available!1286256

Excellent. Five stars.
Very easy to install, took me about half an hour. Only minor complaint is that there were a few small spots on the hitch that were not powder coated, so I’ll touch those up with enamel. I was also able to trim the underside panel a little more conservatively so as to leave the aft bolt attachement in place. Maybe not a big deal but given that it’s plastic and supposed to protect wiring from salt and road grime, I figured leaving as much intact as possible would be a good thing. etrailer shopping and follow up were great1198355