THIS ITEM IS NOT A FIT FOR
2019 Chevrolet Silverado 3500
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Item # 118746
Our Price: $69.84
2019 Chevrolet Silverado 3500
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- All Info
- Reviews (182)
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Tekonsha Custom Fit Vehicle Wiring - 118746
- Custom Fit
- Trailer Hitch Wiring
- 4 Flat
- Powered Converter
- Tekonsha
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.
Features:
- Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
- Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
- Connects quickly and easily
- Locate connection points in rear cargo area
- Plug in T-connector
- Run hot lead to car battery
- Includes ModuLite power converter to ensure that your vehicle's wiring matches that of your trailer
- Powered module connects to battery to avoid overloading vehicle's electrical system
- Constructed of 16-gauge bonded wire
- Comes with dust cap for 4-way flat connector
Specs:
- Maximum amperage:
- Stop/turn lights: 5 amps per circuit
- Tail lights: 7.5 amps per circuit
- 1-Year limited warranty
Installation
This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located inside your rear cargo area. You will have to remove some interior paneling 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 and insert the provided fuse.
Once installation is complete, the 4-way flat connector will be stowed in your spare tire compartment.
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.
ModuLite Powered Tail Light Converter
A ModuLite power module is built into this T-One 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 your trailer. This power module functions as a tail light converter to combine 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.
With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.
118746 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included
Installation Details
This Product Fits The Following Vehicles
- 2017 - 2021 Mazda CX-5
- 2017 - 2021 Mazda CX-5
- 2019 - 2019 Mazda CX-5 excluding Diesel
California residents: click here
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
- Wrong item was ordered
- Defective
- etrailer mistake
Customer Reviews
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118746
Average Customer Rating: 4.9 out of 5 stars (182 Customer Reviews)
Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.by: John 01/10/2024
Mazda
This is my third hitch I purchased from e-trailer. Customer satisfaction is exceptional. Anytime I had a question there is always somebody answered the phone quickly. Directions were right on. Today I just installed my hitch for my 2018 Mazda CX-5. Trailer hitch came with all the right parts and instructions. Keep up the great work.
by: Mark l02/08/2018
Mazda
This was purchased for a 2018 Mazda CX 5. I did a review on the excellent hitch I purchased and spent more time talking about the wiring and how to remove the panels on the 2018. Can't use a hitch without wiring. Get yourself a cheap set of interior auto trim tools. Saved a lot of time popping out the trim connections. Push the trim back into place before you put the passenger seat latch in because it has a pop connection and is easy to do after the trim is in place. After removing all of the undercarriage covering, with plenty of bolts and pop up trim tabs, and taking forever to run the power cord up to the battery, I thought it would have been so much easier to run a hot lead from the power module over to the passenger side, along with the other wiring that has to go over there, and hook a cigarette lighter plug to it. When using the trailer, you pull out the trailer harness from the left side, and you can pull out the cigarette plug and plug it in on the passenger side for power. It is rated for 10 amps and the power module only 7.5 amps. I would have liked to have seen the trailer plug harness about 6 inches longer because it does not reach very far out of the car and I put the power module as close to the back of the car as I could. Plenty of wire holding straps and all the parts needed to do the job well. Everything needed to do the job well.
by: Rick 01/22/2024
The product is great! The videos are a FANTASTIC guide. I was able to do everything myself with no trouble. The wiring lasted a 1,500 mile trip and looks like it will last much longer.
by: Ruky04/20/2022
I haven’t installed it yet. But shipping packaging can be a bit stronger.
Ruky
4/25/2023
After a year of use I am glad to say this product has held up with no issues whatsoever. Highly recommend this product.
by: Jerry 05/03/2024
Works as it should
by: Tom02/13/2024
Everything works fine and fits well, very happy with the purchase.
by: Corey S06/26/2020
It took more time to take the car plastic apart than it did to hook up the trailer wiring. 1 year later, still works great!
by: Douglas07/12/2020
2020 Mazda CX-5
arrived fast. Box was damaged and wiring harness bag looked crushed and taped shut again? Install video was extremely helpful. Was able to install hitch an wiring without having to raise vehicle!
by: Raymond 02/11/2024
Exactly fits for the vehicle I purchased for.
by: Lee 07/28/2023
Everything you need for a simple and effective installation.
by: Philip03/27/2023
Because I was advised to have a product which drew directly from the battery (not just from the harness) I chose this product and am very happy with it.
The only issue for me was that the under carriage shielding on the car required me to get it up on a lift to complete the routing, but it works perfectly and I would definitely recommend it.
by: Eric 03/21/2023
Subaru XV Crosstrek
ETrailer professionally installed on my 2023 Subaru Crosstrek manual transmission car. The product works perfectly as advertised.
by: 2019 CX-5 install -- Simple!11/06/2022
Much simpler to install than the 2005 model. The use of M/F connectors for left and right taillight wiring interruption made the installation a breeze. Routing the power wire to the fuse box in the engine compartment was (and probably will ever be) the most difficult part. In one vehicle, I routed this wire inside the passenger compartment, passing through the firewall via an existing rubber grommet plug. In the CX-5, I followed the video showing how to route the wire outside of the passenger compartment via an existing rubber grommet plug and under the vehicle, but inside the Mazda shrouds. (Shroud routing was easiest, despite working under the vehicle.) In either case, Mazda provides a 10mm stub on the fuse block / battery connector. Buy a stainless 10mm nut and flat washer, separately, for this. All is good!
by: Tom06/07/2022
Mazda
Shipping was very fast and the items were well packaged. The online video to help with installation was spot on and very helpful. Install on our Mazda CX-5 was easy with the included hardware kit. All and all took me about 45 mins to install the hitch. I did it all in my driveway with the help of my 2 sons and my wife.
by: Mike G06/18/2020
Installed the wiring harness a year ago. Installation instructions were easy to follow and using the provided wire clips meant no splicing/cutting wires. Wires and connectors feel heavy duty, and of very good quality. So far so good!!
This has nothing to do with the product, since it is necessary for all of these types of wiring harnesses: If you decide to install yourself, note the hardest part for me was running the wire through the splash shields under the vehicle to the engine battery. It may be best to see how to find a power source through a factory installed power port close to the rear of the vehicle. (e.g. old cigarette lighter)
Michael G.
6/21/2021
It has been a year and product still works as designed. Note I only use a trailer approximately once per month.
by: Cynthia 01/21/2023
I haven't pulled a trailer yet. Only used a rack on my travels, but everything I've purchased from you hasn't let me down.
by: Maurice06/27/2020
I ordered a complete tow hitch set up for my 2020 Mazda. This is the 3rd hitch I have from them. They were all very easy to install and have preformed well. The wiring harnesses were very easy to install as well. This last order I got a bad harness and had a problem with a constant drain on the battery. They were very helpful in getting the information to me for a return of the bad part. Their customer service has been very good and I would recommend them to anyone for both good product and good service, as well as the best pricing I have found.
Maurice
7/1/2021
I just recently ordered another harness to replace the bad one and all is good. Not totally sure the first one was bad now because I got a recall on the auto for an issue that drained the battery. May have been the problem but when I unhooked the one I thought was bad the battery problem went away. Now the recall was done and a new harness is installed and no issues.
by: Eirik02/11/2022
Install was not simple. Three guys and a lift. Had to put hitch on twice due too the fact we took off the muffler rubber holders. Can't get lower ones on with hitch in place. The electrical plug and play omg that was a joke. The entire left and right sides of back interior had to be removed to get to the "plug" and "play" connectors. I rate this as the most difficult hitch I've installed. I've done the BMW x1,x3 and Jeep Grand Cherokee hitch installs from your site...and they were seemless...awesome..but the mazada cx5 really sucked.
Jenny N.
2/15/2022
The installation of the harness is involved for this vehicle. I recommend taking a look at our installation video that we have on a 2019 Mazda CX-5. And also the FAQ that we have on routing the power wire to the battery.
by: Anthony 02/20/2023
2019 Mazda CX-5
Video instructions were amazing. Easy to follow. Very easy to install and hook up.
by: Andrew08/18/2022
Fit perfectly on my daughters 2020 CX5. Routing the wire up to the battery was the worst of it. Thought about tapping into the accessory port as some have suggested but didn’t want to risk overloading that circuit depending on what else was plugged in.
by: Tom H10/16/2017
2017 Mazda CX-5
This applies to a wiring harness installed on a 2017 Mazda CX-5. The 2017 CX-5 was revised so that in order to change a rear light bulb, the lens is now removed from the vehicle instead of going through an access panel in the cargo area. Therefore there is no access panel in the cargo area as stated in the instructions or as shown in the video for the previous generation. The connection points for the trailer wiring harness however are still behind the cargo area trim panels and most of the trim panel must now be removed in order to access the connection points. The same steps must be followed as shown in the video for the pre 2017 model but the cargo trim panels must be more fully removed in order to access the connection points. There is a grounding point already present on the driver side along with a unused rubber grommet that can be used to route the power lead under the vehicle.
by: Jeff03/22/2020
Installed easy except running the power line back to the battery. The 2019 Mazda cx-5 had the underside of the car completely covered in panels. So I ran the power line inside the car under the door sil and into the fuse compartment by the drivers foot rest. I then used a fuse tap (replaces 1 fuse with 2 fuses and with a wire coming off the 2nd fuse to connect to the converter box. It is very easy to run the wire this way. I made sure that the fuse I tapped into was one that was powered all the time and not one that only had power when the engine was on and also was at least the same amperage as the converter wanted.
by: Trailerguy01/01/2023
Straightforward installation, pleased to have it on my vehicle.
by: Don B12/03/2019
I have just installed the hitch and don't need the wiring harness yet. It looks like it will be easy to install once I get all the panels out of the way, (that's the difficult part). The kit looks complete and it is very well made. With regards to the video, should be a piece of cake.
by: Dean 04/06/2020
Mazda
This wiring kit was awesome. The video supplied was easy to follow, and I completed the job in about an hour and a half. The only thing different I did was instead of running power to the battery, I stole it from the positive feed coming from the aux dc power in the rear of the mazda. The lights are rated at 7.5 amps, and the aux plug is rated at 15amps. So as long as when you have the trailer hooked up you don't use that rear aux plug you will be fine. That fuse is by your left drivers foot. Just pull it when tapping into the wire. You have the entire rear end ripped apart anyway. I also installed the inline fuse so it is by the spare tire just in case. Either way, it is awesome and works great!
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Show More Reviews
See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring
- Can the Rear Accessory Socket on a 2017 Mazda CX-5 be Used to Power the T-One # 118746Although the recent CX-5s may have a power source bus in the hatch area you will want to run the wire for power to the battery. The Tekonsha T-One # 118746 is a new kit for 2017+ Mazda CX-5s which Tekonsha designed specifically for your vehicle. Since both Tekonsha and Curt (for the Kit # C56377) say that you need to route the power wire directly to the battery that is the best route to go. After routing the wire up to the battery you need to install the included fuse and connect it to...
view full answer... - Trailer Wiring Comparison for 2019 Mazda CX-5 Curt or TekonshaFor your 2019 Mazda CX-5 we have two trailer wiring harnesses...the Tekonsha kit part # 118746 that I recommend and the Curt # C56377 which is also a solid choice, but the Tekonsha is the better route. The reason I recommend the Tekonsha is because it will be more resistant to internal shorts of the converter box due to shorts on the trailer's wiring. This is mainly due to the higher amperage rating of the converter box (7.5/5 amps compared to 6/3 amps of the Curt) and because in general...
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view full answer... - How Heavy of a Trailer Can a 2018 Mazda CX-5 TowWhat year is your Mazda CX5?
view full answer... - Can 2018 Mazda CX-5 Tow Smaller Rental TrailerWith the Curt hitch part #C12170 installed on your 2018 Mazda CX-5 you could tow a smaller rental trailer like you referenced. It would be just a matter of staying under the weight capacity of the hitch and the vehicle which you'd need to verify in the owner's manual. For trailer wiring you'd want the part # 118746 which is a confirmed fit and our most reliable option. Since you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball...
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view full answer... - Installation of 2017 Mazda CX-5 T-One Trailer Wiring HarnessThe T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118746 is a confirmed fit for your 2017 Mazda CX-5. This will install differently than the CX-9 model you referenced watching a video for, so you will need to work under the panels. I do recommend only loosening what is necessary for this installation and being careful if you remove panels. I've attached the installation instructions with photos to assist.
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view full answer... - Trailer Hitch Fit for a 2019 Mazda CX-5 Grand Touring ReserveYes, the Draw-Tite Max-Frame Trailer Hitch Receiver part # 76138 will fit a 2019 Mazda CX-5 Grand Touring Reserve. That said, the Grand Touring models have an additional underbody trim piece that will need to be permanently removed for hitch installation. The Draw-Tite hitch is an excellent option because of the hidden design so you only see the receiver tube once installed, not the main cross tube therefore you get a very factory like appearance. If you will be towing, don't forget the...
view full answer... - Will Using Ramps Allow Enough Clearance to Lower 2018 Mazda CX-5 Exhaust to Install Trailer HitchYour ramps will be more than tall enough to lower the exhaust when installing a trailer hitch on your 2018 Mazda CX-5. The exhaust only has to come down a few inches to get the hitch into position. The exhaust pipes won't even have to go as low as the bottoms of the tires so with the vehicle up even higher, in this case on ramps, you will have more than enough room. I have linked a video showing an example installation for you. If you plan on doing some towing I recommend etrailer ball...
view full answer... - Can Wiring Harness Be Installed After Hitch On 2019 Mazda CX-5Yes, you can install the wiring harness on a 2019 Mazda CX-5 after you install the Draw-Tite hitch part # 76138 if you want to wait. A lot of customers install the wiring after the hitch once they decide if they will be towing a trailer with lights or just an accessory like a bike rack. If you plan on towing a trailer, I recommend the Tekonsha T-One Wiring harness part # 118746 for the 2019 Mazda CX-5. The Tekonsha brand can handle 7.5 amps per circuit which is a bit more power than the...
view full answer... - Trailer Wiring Install Harness that Fits 2021 Mazda CX-5Tekonsha has a trailer wiring harness that fits your 2021 Mazda CX-5 with the part # 118746 but the one you did try would not work as it was not designed to fit it. I attached an install video for this harness on a similar 2021 Mazda CX-5 for you to check out as well.
view full answer... - Comparing Curt and Draw-Tite Hitches for 2019 Mazda CX-5The Curt # C13315 and the Draw Tite part # 76138 for your 2019 Mazda CX-5 are both really great options that would both work great for you, but if I had to pick one over the other I would go with the Curt as it is a little less visible at the rear of the vehicle than the Draw Tite. I attached a picture that shows both hitches installed and you can see the Curt has a smaller appearance at the rear of the vehicle. The big difference being a bracket on top of the hitch tube that I pointed...
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- Which Panel Needs Removal to Install Trailer Hitch on 2019 Mazda CX-5 GTThe panel that would need removal is located between the bumper and the muffler as shown in the provided photos and install video which shows the installation of the # 76138 hitch. The placement of the trim piece would interfere with the installation of the hitch so it would need to be permanently removed. The trim piece is meant to make a slight improvement to the vehicle's aerodynamics. If you'll be towing with your CX-5, you'll also need a ball mount, trailer ball and a trailer wiring...
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- Difference Between Wiring Harnesses for 2019 Mazda CX-5Between the two wiring harnesses that fit your 2019 Mazda CX-5, Tekonsha # 118746 and Curt # C56377, I recommend the Tekonsha. It has a higher maximum amperage than the Curt. Another reason I recommend the Tekonsha is simply because we've always had better success with their reliability. I also prefer how the Tekonsha's converter box actually uses a screw to anchor it in place where the Curt's is just doublesided tape.
view full answer... - Trailer Hitch and Wiring that Fits 2022 Mazda CX-5We do have the Draw Tite hitch part # 76138 that is a confirmed fit for your 2022 Mazda CX-5 and would work great. This is a mostly hidden hitch with great towing capacities. Then for wiring the Tekonsha kit part # 118746 is easy to install and also very reliable.
view full answer... - Towing Jet Ski With 2017 Mazda CX-5If you are planning on towing a jet ski that is loaded on a jet ski trailer, the Draw-Tite Max-Frame Trailer Hitch Receiver Part # 76138 will work for your application. The hitch can handle the towing capacity of up to 4,500 pounds, although you will not want to exceed the recommended towing capacity that is established by the vehicle manufacturer. The 2017 Mazda CX-5 manufacturers max tow rating is listed at 2,000 pounds. If the weight of the jet ski, and the jet ski trailer are a combined...
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Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Edited by:
Lindsey S
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Video by:
Dustin K
Video by:
Jonathan Y
Installed by:
Cole B
Updated by:
Wilson B
Updated by:
Isabelle B
Written by:
Alexander C
Test Fit:
Robert C
Test Fit:
Ryan G
Test Fit:
Clayton O
Test Fit:
Bradley B
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Mark L.
2/8/2019
After one year and hundreds of miles pulling a small trailer, electrical hookup still works fine. I did run it out the bottom of the car and connected to the bumper for a more professional look.