Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Quickly and easily install a 4-way trailer connector on your Toyota Corolla with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.
This custom-fit T-connector plugs into your Toyota Corolla's wiring harness, which is located behind the driver's-side and passenger's-side interior trim panels in your rear cargo area.
Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your 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.
A tail light converter is built into this T-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 Toyota Corolla's three-wire system need to be combined so they are compatible with the wiring system of the trailer. This 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 Toyota Corolla operate.
Curt builds each tail light converter using surface-mount technology (SMT). This method of construction involves soldering electronic components directly to the surface of a printed circuit board. SMT eliminates the need for leads, which are used in older through-hole technology. The result is a circuit board that is smaller yet provides more routing area and that offers superior performance, reliability and durability.
Circuit boards constructed using SMT have been shown to perform better under rough conditions with excessive vibration than those made using the through-hole method. And where would vibration be more likely to occur than in towing applications? Curt converters also produce less heat, leading to increased durability and longer life. In addition, lower levels of resistance ensure better performance, especially for parts that operate at higher frequencies.
Each Curt circuit board is made using high-quality components that are pieced together in the most technologically savvy fashion, leading to greater predictability and reliability in functioning.
Video of Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today we're going to be taking a look at part number 55542. This is the Curt T-Connector Vehicle Wiring Harness. It's going to have the 4-Pole Flat Trailer Connector. That way it's going to provide the 4-way flat connector at the back of your vehicle to power your trailer signal lights. This is compatible with 5-pole, 6-pole, and 7-pole adapters. Those adapters are sold separately.
If you need one, we do carry those here on our website. This product is going to fit the 2003-2013 Toyota Corolla. One of the great features and benefits of a system like this is that it's going to connect quickly and easily. You don't have to worry about cutting or splicing any of your wires. All you have to do is locate the connection points in the rear cargo area. Those are going to be located behind the driver side and passenger side interior trim panels, and then simply just plug in your t-connectors.
These plugs are a real easy installation. They're going to match up perfectly with the plugs on your vehicle, and literally all you have to do is just snap them into place, and then they're going to lock into position for a nice, tight, secure fit. The side with the green wire, that's going to run to the passenger side. That's why it's got some extra bundle of wire there. The side with the red and yellow wire and brown and white, that's going to stay on the driver side of the vehicle. If we just follow that wiring harness, it's going to take us to this black box right here.
This is going to be your tail light converter. This is already pre-wired in, and that's designed to ensure that your vehicle's wiring matches that of your trailer's. It's going to be constructed using surface-mount technology. It's going to offer consistent reliable performance. What that means is it's going to maximize your trailer light yield and intensity while producing minimal heat.
It's also going to ensure superior operation even in rough road conditions. On this side of the box we're going to have the wiring for the 4-way connector. You'll see we've got plenty of wiring. It's all bundled up right now, but that way you can extend it out the back of your vehicle and make your connection as needed for your particular application. Here at the end of that wiring we're going to have the plug. It's going to be our standard 4-way flat plug, and that's going to include a nice dust cap. That way we can cover up the connection points when the connector's not being used. Once your installation is complete, the 4-way flat connector's going to be stowed in an out-of-the-way location within the cargo area on your vehicle. When it comes to the maximum amperage for the stop and turn lights, we're looking at 3 amps per circuit, and for the tail lights we're looking at 5 amps per circuit. A couple other things that you're going to get. You're going to get very detailed instructions, got some nice pictures on there. It makes the installation much easier. Those are going to walk you through the entire process step by step. You're going to get some double-sided adhesive tape. That way you can mount and secure the tail light converter box. And you're going to get some zip ties. That way you can secure any excess or slack in the wiring. It makes for an overall cleaner appearance for your installation. We're also going to recommend that you use a small amount of dielectric grease on all electrical connections to help prevent any type of corrosion from being able to settle in. If you don't have any of that, you can pick up some here on our website. It's going to be sold separately. That's going to do it for our review of part number 55542. This is the Curt T-Connector Vehicle Wiring Harness with the 4-Pole Flat Trailer Connector.
Average Customer Rating: 4.9 out of 5 stars (60 Customer Reviews)Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring - no cutting, splicing or tapping required. Converter is made using SMT to ensure superior performance.
by: Jennifer p07/05/2014
I originally had a harness that you needed to splice wires together. It seemed like way to much work. I found this harness after doing some hunting online and I have to say it was well worth the extra $ I had to pay for it. Plus it was so easy to install.... Especially for a woman :) I had no trouble at all doing it myself. Thanks to the installation video on the website. Great product & great price. The delivery of the product didn't take but a couple days which was also great. 139369
by: Ava P.05/28/2013
(Oops. Provided the wrong review for this product). My neighbor hooked up the wiring and used to do it all the time, so it was just a matter of pushing it under a rubber overlay at the back under the rear door, and under the carpeting to curl up in the opening for the tail lights. When I do hook it up, it should be a simple matter to attach the loose plugs to the trailer, but, haven't done it yet! 82237
by: Kevin M.12/10/2012
This trailer light kit is fantastic. High quality, easy to install, over-current protected and works light a charm. It just plugs right in with no splicing or soldering involved. Automatically converts the four bulb tail light setup (2 for each side) of the Corolla to a two bulb setup of of a normal trailer. This works great and adds value to my car. I could not be more pleased with this. 61037
by: Mark McIntosh06/07/2013
I am 71 years old. this wiring harness was a piece of cake to install even for an old pilgrim like me (lol).took me about 20 to 30 minutes( but I took my time )..The only downside was the written directions was kinda vague(but then again I'm old. So I went by the video on your website and that was so helpfull...Thank you for a good product 83716
by: Allan W05/08/2013
The trailer hitch's fit was excellent. Also the wiring harness installed very easily. My only problem was that the weld nuts in the frame were very rusted and it took quite a lot of time with a wire tube brush to get them cleaned out so that the bolts would install. Once they were clean, the installation was every easy. 2007 Corolla S. 79455
Purchased the Corolla trailer connector, the product arrived as indicated and installed easily. It also worked exactly as claimed. I ordered the product over the phone; Pat took care of my order and she was terrific. I would use Etrailer again and recommend it to people I like. thanks 96617
by: Paul H.04/19/2013
I purchased a T-Connector kit #55542 for a 2004 Toyota. What a piece of cake to install, 35 min. to complete. 25 min. taking trunk lining out and back in, 10 min to connect wiring. These people have it together also received the kit in 3 days not the usual 7 to 10 76916
by: Terron J.03/24/2011
Works. Instructions could have been better. Could have come with some more zip ties, or better style of zip ties. Some of the cables could have been longer. Could have come with some replacement trunk liner fasteners because you will inevitably break some. 10310
by: Thomas K.05/24/2014
Product installed as expected, instructions included and using online video were good, took less than an hour and was an easy install, worked great. Worth doing yourself for saving the money. Good hitch and easy boattail hookup. Good product. 132310
by: Mike J07/01/2011
Very simple to install. No splicing involved. Just open the trunk liner, disconnect both tail light connectors, and insert the new adapters. Secure with provided zip ties and two way tape then put the liner back in place. Takes about five minutes. 18362
by: ray s05/27/2011
after speaking to a service rep on the phone about installation, he was very helpful. I found installation to be a breeze. The trailer hitch and wiring were top notch I would recommend it to anyone. 15558
by: Shane r.05/14/2015
The product was easy to install and worked great with my trailer only issue was when my lights were left on the blinkers weren't working for some reason.otherwise it worked fine for daytime use 193036
by: Allan W05/08/2013
The wiring harness was very easy to install. The instructions for the removal of the threshold were not very specific, but we figured it out. The rest of the installation was very easy. 79456
WOW! ThisTrailer lighting system was shipped out right away and delivered by UPS. After arriving home I had this installed in my Corolla in 15 minutes. I wish everything was this easy. 75723
by: Richard Q.04/27/2013
This could not have been more simple. Delivery, video and product quality were tops. Installation took 12-minutes and they work as advertised. I'll definitely use you guys again. 78141
by: Mike B08/18/2012
Curt could not have made it any easier. No cutting or splicing. Just follow the directions. Disconnecting the connectors can be a little difficult until you figure out how they work. 52198
Works perfectly Easy to install with no wire-cutting or splicing into electrical system. Perfect match for factory wiring - just unplug a connector and plug in adapter between. 1981
by: richard l.b.05/04/2015
This is about as easy to install as plugging something in a wall. I spent a whole 10 minutes and half of that was cleaning out the trunk. unplug two spots plug in four down. 190082
Installed this product on Toyota Corolla 2013. Took me 20 min to complete. Follow the video provided at etrailer.com. Thank you for the quality product and support. 148514
as with the hitch that was purchased, the installation was easy, and as the connector shipped with the hitch, the project was totally completed in 35 minutes. thank you 22148
by: mike m.12/29/2011
SIMPLE AND QUICK TO INSTALL. NO WIRE CUTTING OR SPLICING. I HAVE ORDERED A TRAILER HITCH AND A WIRING HARNESS FROM ETRAILER AND I AM VERY HAPPY WITH BOTH. THANKS. 28848
by: Travis R.10/28/2012
Easy install (20 mins.), instructions were great. Definitely take the time to run the wiring behind the interior as directed, it fits perfectly. Great product !! 58230
by: Erik M.06/24/2014
Explicit details for installation made this an absolute breeze. This is a plug and play system, no tools are required, and it couldn't be laid out any simpler. 137422
by: Harry W06/16/2012
Process took about 10 minutes after reading the instructions. Included photos showed exactly where everything was located. Works perfectly. Thanks 44443
I HAVE PURCHASED FROM E-TRAILER SEVERAL TIMES AND HAVE ALWAYS BEEN PLEASED BY THE PRICE, QUALITY, AND QUICK SHIPMENT. I WILL BUY AGAIN. 23460
EASY TO PLUG IN AS SOON AS I FIGURED HOW TO GET PLUG APART. HARD TO SEE IN TRUNK. I SHOULD HAVE STARTED ON RIGHT SIDE TAIL LITE FIRST 53073
by: Bill I.01/03/2014
Installation was really easy - it took a little longer than I thought but everything went together without a problem. Great product. 111789
by: Robert K.08/13/2012
Trailer lights on my Tacoma stopped working so I picked up this wiring harness and with a simple installation got the lights working. 51583
by: Mike L11/04/2014
Worked like a charm. Installed very easily. All connections fit like a glove.Instruction easy to follow.Quality appears to be fine. 159097
by: Tayson W.06/23/2014
The product works well. Easy installation in my Corolla 07. This kit made it so I didn't have to do any splicing or wiring myself. 137175
by: Don F.09/11/2014
Excellent design, removes all the trauma of "Wiring" your lights to a trailer. Simple and works first time up. Thanks, 150744
by: John Dow12/17/2010
Great service Thanks for the great service. I received my harness just in time for the week end. Thanks again. John Dow 4308
by: Gary P.05/12/2011
Fantastic service and products. Super reliable and totally professional. I am a repeat customer and will continue to be. 13724
Arrived on time and in great condition. It was the exact item I needed for hooking up my new trailer lights! Thanks! 106069
by: George D.09/17/2012
Followed the instructions and installed it in just a few minutes.All wires are out of the way till you need them 54922
by: carey f10/17/2014
perfect fit and easy install.thank you for quick delivery for my mistake,thank you amanda r for your help 156563
by: Bob Jackson03/13/2012
Completely satisfied. Quick free shipping and great products. Everything as promised. 33810
by: Peter B07/15/2012
My son installed the trailer wiring on the 2007 Corolla without any problems. 48031
by: Jeffrey butterworth12/25/2013
Very happy with the hitch and the ease of installation of hitch and wire kit. 111115
This installed very easy. Only took 10 minutes with very little effort. 15041
Arrived on time, install was easy, I like not having to cut any wires. 67354
by: Neal A09/13/2012
I Have never installed anything as easy as this. WELL WORTH THE PRICE! 54648
Product was as advertised. Grade of wiring is minimal but functional. 14194
Product was easy to install. Great products! Fast shipping! 70459
by: Mel S.08/11/2011
Easy install just follow the instructions, worked first time. 21610
by: John C.01/31/2012
Best wiring job I've ever done took 10 minutes unbelievable. 30752
by: David R02/13/2015
Was setup perfectly for my car, made for an easy install. 173572
product came in when expected and the items requested 49270
by: Rick C.11/15/2013
Installed in 15 minutes with no problem s. 107465
by: Mark K09/18/2013
Quick and easy to install Works great 100436
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