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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 trunk floor coverings, storage tray, trim panels, rear scuff panel, and trunk liner to access this harness. 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.
Once installation is complete, the 4-way connector will be stowed on a flat spot near your taillight, inside 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. 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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Average Customer Rating: 4.7 out of 5 stars (34 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. Powered converter reduces strain on wiring system and is made using SMT to ensure superior performance.Well designed product. The quick connectors made the wiring in the truck really easy. 3hr install due to Attack Mosquitos! The toughest part of this install was Jacking up one corner of the car. and crawling around underneath to coax the long power wire through the under-body smoothing panels.
Great product! Easily combines the brake and turn signal circuits for use on the trailer.
I installed this at the same time as a curt kit hitch for my 2016 Prius. The videos on etrailer made this process very easy. I’d say that it took about 1-1.5 hours to install just the wiring harness. etrailer includes crimp connectors, but I followed the advice of the technicians in the videos and bought heatshrink butt connectors anywhere the wiring was spliced outside of the cockpit. I didn’t buy the trailer lighting tester they mention in their videos. I figured this is a relatively idiotproof install kit. If it doesn’t work, chances are it’s a factory issue.
I had installed a competing product and had to return it as it was designed incorrectly for my model of vehicle. Uninstalled the competing item and installed the Curt item. The Curt instructions were clear and the connectors were correct for my vehicle. The product worked on the first use and still works as required a year later. Just used my trailer a week ago without issue. Recommend this product and Brand.
Easy to install, works great
This connector was only partially functional on my 2019 Toyota Prius Limited. I eventually made it work after sleuthing on PriusChat.com and with etrailer.com technical support. In my case Toyota seems to have changed their wiring scheme within the main connector. I had to move two pins into different locations in the connector after which it performed perfectly. I sent pics and drawings to etrailer tech support and posted on PriusChat for any others facing this situation. Overall the installation was a chore but this wiring harness was absolutely essential to my ultimate success. Very happy with the final result.
Install is not for faint of heart. Wish they provided more in depth on routing power wire to battery. I just ran a extra wire with wiring harness and connector to a battery on my trailer.
The good news is everything came and appears undamaged. The bad news is that the main box was nearly busted completely open; the box was cut in a few places to fit the hitch but the contents of the wiring harness kit busted open and floating around inside the box. The tester unit fell out of the box in my driveway by the delivery guy, thankfully I saw it when I went to get the trash cans. If it had fallen out elsewhere I may not have received everything.
I a looking forward installing this on my 2021 Prius. This one has connectors for tapping into the Prius wiring. A product I installed on my previous Prius used insulation displacing splice connectors. These didn't work because the Prius wires were too small.
Everett
6/8/2022
I have a 2021 Prius non-AWD. This did not work because Toyota changed the pin assignments on the center connector. I returned the product for refund.
Katrina B.
7/15/2022
Damn was it tough to get wiring thru the engine bay on a prius, but this was an excellent kit which made very other aspect a breeze. Highly recommend if you're looking to put a 4-flat on your Prius.
Very easy to install after looking at install video for Toyota Pruis 2016 to 2018. I would recommend etrailer.com to anyone. Very fast delivery, very good product, and I also got the Curt T-Connector Vehicle Wiring Harness also easy to install. Thank You etailer.com
Bought this to replace a DOA Tekonsha. I’d recommend this for the extra money over the Tekonsha as obviously Tekonsha doesn’t have adequate quality control. The trade-offs between the two are:
(a) the Tekonsha cuts brakes in at the back of the taillight, while the Curt cuts in at the combined connector behind the bumper. The latter is way easier to reach (the taillight connection point is about 2’ up inside the back corner of the bodywork), but it’s a much harder (seriously!) connector to unclip.
(b) the Curt has a shorter left turn wire, so you pretty much have to put its box behind the trunk felt instead of under the foam blocks under the trunk floor.
The first part of the installation went well. As for running the 12vdc line, well that was a bit of a challenge. I finally did complete the install and am content with the it. Your videos where very helpful. Toyota did not make this easy, If they had stuck with the battery in the rear, it would have been a LOT easier.
Thank You!
I have a 2021 Toyota prius
Turn signal turns work on trailer, but brakes or tail lights dont work
Very fast. Professional. Honest. The be st!
Julio
12/26/2022
Still functions perfectly. No wear or corrosion. When not in use i keep the terminals covered and stowed away under my trunk mat, with the spare tire. I regularly rent unhaul trailers and i always have adequate length of wire to reach the trailer and everything powers what its supposed to.
Perfect fit with great instructions.
Easy install, works Great, no issues at all. Thanks for a great product.
It arrived in good condition. I will not open or install for a few weeks. But happy so far.
Well worth it $
Thanks Roger R
Easy install, works great.
The order was processed and send early. Good job!!
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Casey
7/31/2023
Wiring harness is still working great! Ive now been up and down the east coast with many a trailer. From little utility trailers, to 12 ft U-haul box trailers. Amazing how much a little Toyota Prius can hall. Thanks for a well built product that lasts.