Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
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2004 Lexus GS 300
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2004 Lexus GS 300
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Quickly and easily install a 4-way trailer connector on your vehicle with this custom harness. T-connector plugs directly into existing wiring. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.
Features:
Specs:
Installation
This custom-fit T-connector plugs into your vehicle's wiring harness, which is located in your rear cargo area. You will have to remove the rear scuff panel, storage trim panel, and side trim panel to access this harness. Once you've plugged in the connector, open your fuse box and locate the fuse position indicated in the instructions. Then insert the included 10-amp fuse.
Once installation is complete, the 4-way connector will be stowed in an out-of-the-way location within your trunk.
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. This converter is a circuit-protected, battery-powered unit that bypasses the electrical routes that are used by a basic wiring harness. As a result, there is virtually no draw on your tail light circuits.
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 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 vehicle 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.
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I ordered a complete trailer hitch and wiring harness for both of my vehicles. No fault of etrailer but one hitch's packaging was damaged during delivery. After ascertaining the hitch wasn't damaged and all the pieces were there, so I didn't make a big deal out of it. I had it installed, and it looks great. The only thing since I went with the etrailer brand because it was made in America, I wish the hitch had bracket to hold the four flat wiring bracket already on the hitch so it could be the powder coat matte black finish too. It is not a big deal because I ended up getting a bracket from etrailer but it is a gloss black. The one thing I would do different was to install the hitch myself. I just didn't have the time, the space in my garage or any help to get the hitch on.
The wiring harness is well made and a good value. I bought this to accompany the Curt 13397 hitch (also from etrailer) for my 2025 Honda CR-V. The installation instructions are sufficient but the pictures are dark and hard to interpret. I checked the videos on your website but the most recent is for a 2024 model year hybrid and differs significantly from my car. There are also no videos available on the Curt website. I did some searching and located an excellent video from U-Haul which guided me through the process step by step.
Also, some videos and comments refer to installing a 20A fuse in the under-dash fuse block (also specified in the Honda owners manual) but a 15A is included in the kit and it functions ok.
2026 CRV Touring Hybrid. Just follow the video instructions and you will be fine. One note, The Honda plug is held in place with some brown heavy duty electrical tape. I thought it was in a plastic holder and I cold not get it out until I finally got a better look at it and realized it was tape and very difficult to cut. The dash fuse box is not the easiest to find. It is located on the far left side just inside the dash panel. Once you stand on your head and can see under the dash it is easy to locate Fuse #17, third row second fuse down.
Easy to get to wiring and was truly plug and play on my 25 hybrid CRV touring. I ran it out the rear of the floor through a rubber grommet, just needed to open that hole a bit with a dremel to get the plug to fit through, rubber grommet back in and some silicone, then used the curt harness holder for the plug end.
Easy to install. It would have been better to explain the purpose of the 15 amp fuse. I had to call to find out what it was for. It goes into the fuse block under the driver’s side dash. It was rows down and 3rd slot over. (See photo below) Once the fuse was installed the lights worked great.
Very easy to install etrailer video more helpful than the instructions
Note that on my 22 CRV Hybrid AWD there are two white connectors held with brown tape to the wiring harness. One small connector with two wires behind the lower panel and another larger white connector taped to the harness with brown tape behind the upper panel. The larger connector is the only one that will fit in the trailer wire harness.
Installation was pretty straight forward, the most difficult part was finding an exact match for my Honda CRV hybrid on the website, information was generic at the time and cross referenced two connectors that obviously were not for the same connection; maybe they have cleared that up by now. The installation was not difficult at all, save the fact that the OEM connection was hidden behind the interior body sheet metal.
Purchased to connect trailer lights to CR/V. Directions were simple to follow and light connections to the device fit my Honda as advertised. Etrailer is my towing go to supplier.
Very easy to install in 2022 Honda CRV.
Gwendolyn Y.
7/2/2025
I really like the addition of the lights on your bike rack, Mike!
Thanks for checking with me about the CURT Custom Fit Vehicle Wiring harness for our 2024 Honda CRV.
The online video instructions were excellent and extremely helpful. Even though the process of installing the CURT Custom Fit Vehicle Wiring harness included removing several trim pieces, I had no trouble following the instructions and the project was completely successful. When I was done, you couldn't even tell that any of the trim had been removed or that anything had been altered. The only clue was the new custom trailer harness wire coming out of the rear hatch under the spare tire cover.
I couldn't be happier with CURT Custom Fit Vehicle Wiring harness. It has not given me one moment of trouble and has worked flawlessly since it was installed.
I would gladly do business with you again anytime, without hesitation. I don't usually make recommendations of any sort, but the CURT Custom Fit Vehicle Wiring harness is an exception to that rule.
Well done, and thank you for producing such an excellent product and product support.
The product fit my car, and is sturdy. When purchasing it wasn't clear about how the wiring would run. I am disappointed, that wiring kit was not a thru the wall type kit, that would allow the wiring connection to always be outside the car for a connection. It didnt come with a thru the wall gasket set up, like my previous, and others. So the wire sits inside the car, and when I trailer I have to have the wire hanging out the back hatch, and have to close the hatch on it, since there is no back window. IT is not elegant, and I am disappointed by that.I only found this out after the mechanic installed it, and said that's how it has to be with this one.
The trailer harness works great and easy to install. The hardest part was finding the factory harness inside the vehicle.
It works well, glad for the install video combined with the instructions. The snapping noises are kind of scary when popping all those plastic clips out. It goes fine if you take your time and follow the directions.
ease of installation was great, work we ll!
Perfect fit. Youtube installation videos are very helpful.
The wiring kit for my 2025 Honda CRV was a very simple install after I located the factory wire harness white plug. Hint, mine was wrapped in brown plastic tape. I was able to route my harness into the spare tire compartment so it is stored out of sight when not in use.
Very easy to install with the instructor video
Everything appears well made. The installation video was a huge help. I've made several purchases from etrailer. The packaging, shipping and products are always high quality.
Great instructions made this an easy in stall.
It included a second fuse which was needed but no instructions were given what to do with it. After installation of harness the lights did not work. I went on etrailers site and found video with instructions on putting fuse in under dash fuse holder.
Brooke M.
2/27/2025
Im glad our video was able to help you out in a pinch, Wesley! Thanks for saying so :)
Easy install great product thank you so much etrailer
Brooke M.
5/27/2025
Very welcome! Glad to hear things are still on the up and up here a year later :)
I received it and installed as specified, but the unit was faulty. I received another one within a few days and it worked correctly after that. Make sure you install the fuse under the dash near the steering column. My issue was that there was no ground on the white wire out of the converter box.
Excellent product. Instructions were easy to follow and thorough.
Installation went good. The problem was with the lack of space near tail lights. Wiring was well made and instructions were very clear.
Greg
12/16/2024
installation was easy and good instructions.
Easy to choose the correct trailer wiring harness for my vehicle on their website. Great follow up throughout the delivery progress. Easy to install instructions. Everything required to complete the installation was included in the kit.
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Mike L.
11/5/2025
Thanks for the tips, we (and anybody else who comes across this later) will certainly appreciate it!!