To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
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 and the rear and side scuff panels 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 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. 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.
California residents: click here
Average Customer Rating: 4.8 out of 5 stars (70 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.I bought the C56310 trailer hitch and the recommended wiring harness for my 2016 Maxda CX 5. I jacked the back of my car up and installed it in my garage. Everything went together smoothly with no issues. Between the hitch and wiring it took under two hours. My local trailer place wanted almost $600 for the hitch wiring and installation. I spent $**. Excellent support videos and online support. Quality product.
This is a replacement for my previous Curt harness / adapter, which developed an intermittent fault in the running lights after several years of use. After troubleshooting I concluded the fault was interior to the module, which is sealed and not possible or practical to repair--so I replaced it.
Paul
5/15/2023
This replacement developed the same intermittent fault in the running lights almost immediately. Purchased a different brand, can’t recommend at this point.
After gathering my tools up and setting my timer it took me 90 minutes to get this job all buttoned up. The instructions were clearly written with good pictures. I would add a wire fishing tool to the recommended tools list though.
I've had this on my Mazda CX-5 for the past year, I've used it numerous times, hauling one dirtbike on a hitch carrier, hauling multiple large motorcycles on a Kendon Motorcycle Trailer, and also using my No-Mar tire changer on it as well. It's been super durable and problem free. Hoping for many more years of quality use out of it.
I purchased the wiring harness along with a 2" hitch, as well as a Hollywood Racks bike rack. The videos for all three items made the installations easy. I purchased the hitch shortly after purchasing a Mazda CX-5, primarily for use with a bike rack. I went ahead and purchased/installed the harness at the same time so that if and when I need it for towing, I'm ready to go. This harness, slaving off the battery for power directly, versus the lights, made sense - brighter, no concerns of blowing fuses, etc.
On a side note, I really like my Hollywood Racks bike rack - it holds bike snug, it's secure, it's easy to mount, and best of all, I can switch from a two bike mount to 4 bikes in maybe 5 minutes.
Eric
6/11/2018
I haven’t actually used the wiring harness as of it, so nothings changed as far as my review goes. That said, we moved to Germany later last year, and trailer lighting requirements including bike racks that reduce visibility of rear tail lights and license plate require lights and plates be attached to those extensions. Bike racks available here now only come with lights and room to attach a plate, but the hitches are different. SO, I will be purchasing some trail tail lights and a harness soon and building a basic light and license plate board that I’ll hang attach to the bike rack I also purchased. I’ll be sure to seek help as necessary, and intend to purchase from etrailer. Will be in touch.
Rachael H.
6/12/2018
Helpful Links
This is a true plug and play adapter for your trailer lights. It takes more time to remove the panels than it does to install the adapter. It works with my 2016.5 CX-5 that has partial LED lighting. Power is available in the rear from the 12V power outlet that is always hot and has a 15A fuse. There is a body ground behind the left tail light, just perfectly placed. Below and behind the left tail light is a flat spot and a natural place to put the control box. DON'T use it; the trim panel will not fit with the box there. Tuck the control box behind a flange just to the rear of that perfect place for the box.
John
8/28/2018
Not much to say after a year. It works great! Has not caused any problems with the tail lights or car. Perfect as can be.
Fix perfectly, but I ran the power cord inside instead of following the instructions. It fit under the trim and there was a “spare” grommet to run it through the firewall. Overall I’m very happy with the whole transaction! Thanks again etrailer!
Gord
4/2/2019
No issues, I’m happy! I kept all the wiring inside so it doesn’t get exposed to snow and salt.
Performing as expected
The wiring harness fits perfectly, and was super easy to install. I have no complaints, and the team at etrailer.com were great to work with, super fast service!
Jeffrey D.
11/2/2018
Fantastic, no issues!
* Wiring harness works great, no problems so far after 1 year.
* Easy to install if wiring doesn't scare you. Plug and play makes it simple. I elected not to run the 12V line all the way from the trunk to the battery so I connected the 12V line to a cigarette lighter plug and then plug this into my accessory port located in the rear cargo area. I dont use the trailer all that often so simply plugging/unplugging this cigarette lighter in each time is no big deal. The CX-5 cargo area accessory socket is already fused for 15A so there should be no problem with the LED trailer lights I'm running.
* I have purchased several CURT trailer hitches and wiring harnesses over the past several years and have been very pleased.
* etrailer has also been very easy and professional to work with. Their website is outstanding with videos and instructions to review items before you buy to see what the installation will entail. I wish other websites were as thorough.
*Wont hesitate to buy again from etrailer.
Everything hooked up just like indicated. Great product
Product was as expected and as described. Easy to install. Used to tow a utility trailer by Jeep Cherokee, a alwn mower at times and was used once to haul load of furniture in my son's move. Would recommend it to persons needing an after market towins setup.
Lanier
6/7/2021
Continues to work well with no problems.
Product works and instructions were pretty good. Instructions could have been a little better on some points: 1) Routing power wire to the battery could use a suggested route. 2) No mention of the access panels that are available on 2016 CX-5, which makes getting to the rear light sockets a breeze. 3) Suggest a good place to attach the control module so the harness doesn't end up too short to reach the hitch area.
I found a YouTube video that filled in the gaps.
We were very pleased with our order from etrailer (hitch receiver + wiring). They took the time to ensure the wiring harness didn't rattle around in the package with the receiver and filled our order in record time. While we will be only using it occasionally, having an easy to install tow package will help us move those bulky loads with ease. Thanks etrailer!
The module in my original Curt wiring harness went bad after 3 years which was a real disappointment as I hate installing these things. Didn't have much choice, so I ripped my interior apart (again) to remove the old module/harness and install the new one. It would have been easier if the harness plugged into the module, so that just the module could be swapped out, but everything is hardwired. A few hours later the job was done. I like that the harness plugs right into the existing tail light connectors: no splicing into car's wiring harness. I did not run a new wire to the battery and just spliced into the existing one from the original install.
The instructional video from eTrailer was great and they are a pleasure to do business with. I'm still annoyed the original module went bad, but life happens.
This is the third hitch that I have purchased from etrailer.com. All have been exactly as ordered and, although I have not had time to install the new hitch, I am certain it will fit. The detailed installation instructions and online videos make it impossible not to do it correctly and easily. The same goes for the wiring harness that I ordered. I have never installed one before but, after watching the video, it looks like a piece of cake.
I purchased the hitch bracket and the wiring harness for a Mazda CX5. Was very satisfied with the quality of the product. Both packages were complete without parts missing. Installation went very smoothly, recommend two people to install the hitch as it is cumbersome trying to hold it in position and start the nuts on the bolts. Very satisfied with the end result.
The wiring kit was a breeze. If your mechanically inclined it should be easy for you. The instructions are clear, shipping is fast and the website layout is great. Good job etrailer.
Everything arrived on time and well packaged. The wiring install went exactly as described in both the written and video instructions. The main reason I purchased from etrailer.com was the quality of the information on the products and installation. Couldn't be happier with the process from beginning to end. And the new hitch and wiring looks and works great!
It was very simple and straightforward to install. It took about 20 minutes to do. Fortunately there was a 12 volt outlet in the rear of the car to hook the power feed up to it
This harness was purchased for my grandsons vehicle. As far as know it has worked great. As far as installation ? He installed it. I didn't hear any complaints.
Great products !!!!!
Well, my wiring kit arrived safe and sound. Tomorrow I install. I do think the time listed for the install is a bit understated, but we'll see. I thought that I would just tear the back of the car apart and wasn't ready for the part about running the wire to the engine compartment. Simple enough except for the underside work. Maybe I'll have more later.
As good as the product itself are the videos available pertaining to the installation of the product and related items. I viewed them all. Excellent subject matter with complete instructions.
The wiring harness was a perfect fit for my SUV and works as expected. Instructions could be more detailed but I found Youtube videos that showed the installation process.
The harness has been great no issues. I followed the video and installed in no time. Appears to be a high quality product.
Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
Bill. M.
7/20/2017
I use my hitch weekly for towing my boat. I have had zero issues. Everything was easy to install and works perfectly. I have not seen a factory installed hitch on a Mazda CX-5 so when others see it they ask me where I got it and I always recommend ETRAILER.