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Curt/
Custom Fit/
Trailer Hitch Wiring/
4 Flat/
ConverterItem # C55379
Retail:$70.51
Our Price: $37.58
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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 - no cutting, splicing or tapping required. Converter 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 behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.
Once installation is complete, the 4-way connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.
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 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.
Installation Details 
1989 - 1992 Toyota Pickup
1998 - 2004 Toyota Tacoma
1996 - 2004 Toyota Tacoma
1995 - 1995 Toyota Tacoma 1995.5 Mid-Year model
1995 - 1997 Toyota Tacoma 2 Wheel Drive
1995 - 1997 Toyota Tacoma 4 Wheel Drive
1993 - 1995 Toyota Pickup excluding T100
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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 review part number C-55379. This is the Curt T-connector Vehicle Wiring Harness with the 4-pole Flat Trailer Connector. This part is a custom-fit part number. It is designed to fit the 1989 to 1995 Toyota pickup; also the 1995 1/2 to 2004 Toyota Tacoma. This is a custom-fit part number, and anytime it is a custom-fit part number I do like to recommend to go to our website and use our fit guide. Put in your year and model vehicle, and it will show you if this part will work for your application. This part number includes everything shown here on the table. This will provide a four-way flat trailer connector at the back of your vehicle to power your trailer's signal lights. It does connect quickly and easily; there's no cutting or splicing of the wires. Basically, you locate your connection points behind your tail lights on your vehicle, plug in these T-connectors to each side, and then ground this wire and you'll be ready to tow a trailer and supply the lights to the trailer. It does include this tail-light converter, which will help you ensure that your vehicle's wiring matches that of your trailer.
This is constructed using SMT technology, which is Surface Mount Technology. That will give you consistent, reliable performance, and it helps maximize your trailer light yield and intensity while producing minimal heat. It also ensures superior operation in rough-road condition. It also comes with this dust cap which is used for the four way. Basically, what you can do is just put this around the connector itself, and then when you're not plugged into the trailer you can put this dust cap right over the four way. That will protect it from any weather; it also protects it from getting any damage to the terminals there. The specs on this wiring harness: the maximum amperage for the stop-turn light circuit is three amps; the tail-light circuit is five amps per circuit. It does come with this nice set of instructions.
These instructions will have nice pictures to show you where your connection points are on your vehicle When you go to install this what you do is go to the back of the vehicle. You have to remove your tail lights, and at the back of the tail lights you'll have connection points that will match these T-connectors. You'll start on the driver's side, the one that has the yellow wire in it. This will attach to the tail lights behind the tail lights on the driver's side. Then you'll run this longer wire, with the green wire in it, over to the passenger's side. The same way, attach this behind the tail light on the passenger's side. Have this extra, white wire with the eyelet on it. What you want to do is connect this to a good, clean ground.
If you don't have one you can drill a hole and use the grounding screw they include. On the connector itself you want to secure this so it doesn't bounce around. They give you this double-faced tape you can attach to there; peel that off, put this on a nice, flat surface so it won't move around, and then they give you some extra zip ties to take up any extra wire that might be hanging down. You can use the zip ties to secure that. What you'll do is just run this length of wire out of the back of your vehicle, and that's where you'll plug in your four-way from your trailer to. That should do it for the review on part number C-55379, the Curt T-connector Vehicle Wiring Harness with the 4-pole Flat Trailer Connector. .
Average Customer Rating: 4.8 out of 5 stars (94 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.Always confident in any purchase from rhe folks at etrailer! Good pricing and prompt service/shipping 574957
It's a great product, and was easy to install took about 30 minutes 244263
Very easy installation. I had a bed cap installed and they spliced the brake light wires but this plugged right in! 369837
Installation was easy enough. The only thing that could have been better is if I had some cable shield. I routed all wires away from any sharp edges and secured them to the existing cables with electrical tape and the zip ties that were provided. The double back tape for the controller was a nice touch and I found the perfect place for it in the video. All lights functioned perfectly, I have no complaints. 548983
The bumper bracket does not fit back over the frame and hitch. The bracket tab that goes through the hole in the hitch and around the combined width of frame and hitch is too narrow. I will need to trim the tab and widen the gap to allow sufficient clearance. The video shows that it merely slides right into place. Not the case for my install. 273545
Positives: Product installations were easy to follow and the product functioned as advertised upon completed installation. Wire lead length was reasonable. Negatives: A warning label attached to the wires warned that the converter module must be mounted in a protected area similar to the interior of a vehicle. This type of mounting is virtually impossible on the Toyota Tacoma. The converter was sold for the Toyota Tacoma. Since the converter box cannot be mounted in a protected area, I expect early failures. 104424
Fast shipment!! Received hitch in a few days. instructions where right on and easy to use. Plus, online there was a video from etrailer on how to install the hitch. Hitch and wiring only took 2 hrs to install. Great product, great service will definitely order from them again! Thank you etrailer! 294806
This product is terrific. I found some weird wiring that someone did on the left rear light of my truck in the past. Apparently they were trying to get the trailer lights to work by adding direct battery wiring. I wasn't sure what to do so I decided to start by just removing all that extra stuff and installing this kit as per directions. I did that and boom!.... The the tailer lights worked perfectly first time out! I was very surprised... I was sure there would be problems. But there were not! It was just too easy! 514917
I Have never had to give my trailer lighting a second thought... Every time I check the lights they always work as they should
Richard - 05/31/2019Hey guys thank you for a great product got it on time like promised , install just like you said fixed my problems with all lights working like it should so I'll be recommending this to whoever's has a problem like me. Thank you once again. In a time these days when people promise you anything to get you to buy their stuff just to get disappointed thanks for being straight up 726818
Easy to install and well made 723147
Great produce. As you had told me about some vehicles, that some need help to work in using a wiring harness in lack of power from that vehicle. My 2002 Toyota Tacoma is one that needed help. When I called you back with my find, you rushed a fix ( freely) to my need quickly for my truck that saved me from missing my hunting trip that I was leaving in less then a week. Great produce from a great company with great employees that care for each need of the public. When [etrailer] was formed, obviously it was formed right from the top down, thinking about the person, the public. GOD BLESS 717879
Great product.. easy to install.. Quick service Awesome company.. 692311
Good quality 690991
Thank you for the perfect fit which installed easily, economically and quickly. This will save me big on being legal again for trailer lights. 677089
Fast shipping, great service A+++++ 672530
Solid value. Hitch and wiring (sold separately) was easy to install with the help of a friend. Would buy again but this hitch will outlast the life of my truck. 652631
It was an easy plug in hookup to my 03 Tacoma. Only issue I had was I had to convert my trailer lights to L.E.D. from standard lights to make everything work properly. According to the technical advisor at etrailer, the converter from a 5 wire truck harness to the 4 wire used too much power to operate the standard lights. 640930
Thank you for the follow up, Carol. The experience was great and would recommend to others. 629495
Easy to install 620218
So easy to install, the hardest thing was taking out the 4 screws from the tail light, lol that's how easy it is and it works great on my trailer lights 619632
Easy straight forward installation. 619346
We have been customers of etrailer for some time - always knowledgeable and excellent customer service - as well as fast delivery. Much appreciated! 588331
Fast delivery. Product was easy to install with the provided instructions. No cutting or splicing. Works perfectly! Would highly recommend. 585040
I am replacing a wiring harness that I previously purchased from etrailer.com. The previous harness lasted for 15 years until the salt and calcium chloride spread on VT roads took its toll on the electrical connections. I'm pleased with the performance and endurance of the harness in some challenging environments. Thanks for your service. 577615
Harness is well made and install is very straightforward. Also a great price on eTrailer.com! Had an issue with the first harness we installed. eTrailer went above and beyond to get a replacement unit out immediately and delivered to me in time to be installed before our big camping trip. Thanks Nicole! New unit works perfectly and am very pleased with the product and eTrailer's customer service! 574585
This product installation was so simple. Recalling what a pain it used to be to locate and cut into wires to splice-in connections, this product makes the task easy. Delivery was timely along with the receiver hitch and bracket, and at a great price. 570547
Worth every cent. 10 minute installation seemed like 5 minutes. Pretty straight-forward. 566775
Great product, does involve removing both rear taillight covers to connect, but other than that everything is provided including double stick tape, metal tapping screw & zip ties. 559144
Very fast and timely delivery. I still have not installed the harness. But the service was great. 551867
Correct product shipped quick 550493
I had already put on this same flat 4 pin wiring harness on my other Toyota truck and this was even easier, because I knew what to do. Works great, just like the other one I installed. Good product. 542891
Worked great, easy to install. 521808
It was an exact fit...great layout of instructions....fixed my towing light problems and delivery was very prompt...would recommend to anyone 500320
Install was simple and worked as designed. Did fail just under a year but was quickly replaced. Great customer service. 496713
Very nice product. Easy to install. Took longer to put wire protector around it than it was to install. Works really good and with no problems. The instructions with it easy to read and to the point. I would recommend this product to anyone. 490246
Overnight shipping as requested, outstanding communications updates and the ball hitch actually had some shipping wrapping around it. Nice. The wire harness install was a breeze although I agree with other posters who made the point that there isn’t enough wire to store the box out of the way of the elements in a Toyota Tacoma mount. I’ll use the enclosed two way tape (kind of a joke considering the location options) and coat the box with silicone sealant. 479429
Thanks for the follow up and the wiring is great! I use my hitch and trailer light all the time. I have had no issues and it was super easy to install. Thanks again. 477449
All good. Easy install 476769
Works great ,easy install Thank you 468599
solid piece of gear. Wiring harness was very easy to install as well. great price. Instructions were spot on. Definitley would purchase from them again. Packing container was damaged upon arrival but nothing was missing. 452827
Just what I needed Excellent product 448966
The harness was easy to install and everything fit and worked perfectly. 443566
The trailer wiring harness installation went very well. It was a perfect fit on my 2000 Tacoma, and everything worked perfectly. Thank-you 442427
Excellent products! Super fast shipping. Everything fit my truck perfectly. Customer for life. 440576
Very easy to install, just followed the direction that came with the product 438342
Custom fit of the trailer lighting assembly was a perfect fit and only took 15 minutes to install. Neat and clean finish that functions perfectly. My order arrived in 2 days. Great product you will be pleased. 438121
Quick to ship and good product good pri cing 434858
Great product 432298
Excellent - quick - friendly customer service person. The hitch, wiring harness, ball mount and ball were all as described. Would definitely order from these folks again, 427204
The install was easy enough and I like the look of this hitch. Fits well and works well. I had a really nice experience with Etrailer as well. The shipping was fast, and the follow up customer service was very nice. Thanks! 426408
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