Trailer Wiring and Bracket For 16‑23 Mazda CX‑9 w/Factory Tow Package 4‑Flat Harness Plug Play
Model: 118278 118144Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
This Hitch Fits The Following Vehicles:
2016 - 2023 Mazda, CX-9, w/Factory Tow Package
Direct Plug & Play Wiring Kit
Wiring Specs
| Part Number | 118278 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions |  |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
Questions or Comments? Call 702-374-8999
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
16 17 18 19 20 21 22 23 2016 2017 2018 2019 2020 2021 2022 2023
$55 33 $61.70 10% OFF
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$61.70 $55 33
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Product Details
- Brand: Tekonsha
- Model: 118278 118144
- Includes: Tow Custom Harness, Mounting Bracket
Compatibility Chart
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
This Hitch Fits The Following Vehicles:
2016 - 2023 Mazda, CX-9, w/Factory Tow Package
Direct Plug & Play Wiring Kit
Wiring Specs
| Part Number | 118278 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
| Part Number | 118144 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| Mounts electrical connector to attachment bracket Includes screws and nuts Attractive point-of-purchase packaging |
|
| Warranty | 1 Year |
Questions or Comments? Call 702-374-8999
Thank you for choosing Tekonsha, the most powerful name in trailer light wiring and brake control system. Our trailer wiring harness is vehicle specific, requires no splicing or cutting of the wires. Simply plug & play and your vehicle will be able to control trailers brake, turn and running lights. Trailer wiring kit comes with a 1 year warranty and everything necessary to install the trailer plug wiring. Tekonsha manufactures a wider range of different products for hooking up trailer lights to your Car Truck or SUV. T-One connectors work great with boat trailer wiring and utility trailer wiring. Typically those trailers will use the standard 4 flat plug which is what our T One connectors offer. If you have an RV Fifth Wheel or any other large type of trailer you will us a 7 pin trailer plug to control your electric trailer brakes. Tekonsha offers 7 pin trailer connector as well. Simply do a search above to see if there is a 7 wire trailer wiring available for hooking up your 7 way. If there is not you can use part number 85343 trailer wiring adapter to convert any 4-Flat into a 7-Way. In addition you will use part number 20506 which will include the rest of wiring needed for electric brake controls. You can also call us or email us any time and we will be able to provide information you need.
Partial list of fitment years:
16 17 18 19 20 21 22 23 2016 2017 2018 2019 2020 2021 2022 2023
Get Expert Help
Trailer Wiring and Bracket For 16-23 Mazda CX-9 w/Factory Tow Package 4-Flat Harness Plug Play Install Notes
Installation Instructions for T-One® T-Connector for Mazda CX-9
Part Numbers:
- 118278
Tools Required:
- Trim Panel Puller
- Test Probe
- 10mm Socket or Wrench
Step-by-Step Instructions:
-
Prepare the Vehicle:
- Open the rear tailgate and remove cargo nets and the cargo floor hatch to access the spare tire area.
- Temporarily remove all floor coverings to expose the spare tire compartment.
-
Remove the Threshold Plate:
- Using a trim panel tool, carefully pry the threshold plate away from the vehicle, being cautious not to damage any clips.
-
Remove Interior Trim Panels:
- Partially remove the lower interior trim panels on the passenger side of the vehicle only.
- Remove several trim panel fasteners to allow panel removal.
-
Connect the T-One® Harness:
- Locate the vehicle’s trailer tow plug behind the trim panel removed in Step 3.
- Insert the 8-pin tow plug adapter and lock it into place. Ensure the connectors are fully inserted with locking tabs in place.
-
Ground the White Wire:
- Locate the existing ground stud near the tow plug connector.
- Loosen the nut, place the T-One® Connector’s white wire with the ring terminal on the stud, and retighten the nut.
- Ensure all existing ground connections are still attached.
-
Mount the Black Box Module:
- Locate a flat surface in an out-of-the-way place and mount the T-One® Connector’s black box module to prevent damage or rattling.
-
Secure the Wiring Harness:
- Use the provided cable ties to secure the T-One® Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Reinstall the plastic trim panels, threshold, storage covers, floor covering, and any other items removed during installation, ensuring no wires are pinched or damaged.
-
Test the Installation:
- Verify all connections are complete and test the installation with a test light or trailer.
- For the initial test, reset the vehicle’s electrical system by temporarily removing the key from the ignition.
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
- Always wear safety glasses and follow safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and the instruction sheet for additional details.
- Store these instructions for future reference.
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