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Trailer Wiring and Bracket For 22‑24 Mazda CX‑5 23‑24 CX‑50 Plug & Play 4‑Flat Harness
Model: 118871 118144Includes Everything Pictured:
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Installation Instructions
Fits The Following Vehicles
2023 - 2024 Mazda, CX-50, All Styles
Wiring Kit Specs:
| Part Number | 118871 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions |  |
4-Flat Mounting Bracket
| 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:
22 23 24 2022 2023 2024
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Product Details
- Brand: Tekonsha
- Model: 118871 118144
- Includes: T-One T-Connector Custom Harness, Mounting Bracket
Compatibility Chart
Includes Everything Pictured:
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Installation Instructions
Fits The Following Vehicles
2023 - 2024 Mazda, CX-50, All Styles
Wiring Kit Specs:
| Part Number | 118871 |
| Brand | Tekonsha |
| Warranty | 1 Year |
| Installation Instructions | |
4-Flat Mounting Bracket
| 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:
22 23 24 2022 2023 2024
Get Expert Help
Trailer Wiring and Bracket For 22-24 Mazda CX-5 23-24 CX-50 Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-One® Connector for Mazda CX-5
Part Numbers:
- 118871
Tools Required:
- Trim Panel Remover
- 10mm Socket or Wrench
- Drill (3/32” Drill Bit)
- Wire Crimpers
- Wire Cutters
- Philips Head Screwdriver
- Test Probe
Step-by-Step Instructions:
-
Prepare the Vehicle Interior:
- Open the rear hatch.
- Remove the rear threshold plate, privacy screen, storage covers, and floor covering.
- Open the rear door and fold the rear seat forward.
- On both sides, partially pull back the felt side panels to expose the wiring connectors.
-
Locate Wiring Connectors:
- On both the driver’s and passenger’s sides, locate the vehicle’s taillight wiring harness connectors matching the T-One® T-Connector ends.
- Disconnect the connectors carefully, ensuring not to damage the locking tabs.
-
Install Driver-Side T-One® Connector:
- Insert the T-One® T-Connector end with the yellow wire between the vehicle wiring connectors and lock it into place.
- Ensure all connectors are fully inserted and secure.
-
Mount the Black Box:
- On the driver’s side, mount the T-One® Connector black box using the provided double-sided tape.
- Secure the remaining harness with the provided cable ties to prevent damage or rattling.
-
Ground the White Wire:
- Locate a grounding point near the black box, such as an existing ground stud, or drill a 3/32” hole.
- Clean the area of dirt and rustproofing and secure the white wire using the provided eyelet and screw.
Caution: Verify the area behind any surface before drilling to avoid damage or injury. Do not drill into exposed surfaces.
-
Route Passenger-Side Connector:
- Route the connector containing the green wire across the threshold and behind the passenger’s side felt panel to the taillight pocket.
-
Install Passenger-Side T-One® Connector:
- Insert the T-One® T-Connector end with the green wire between the vehicle wiring connectors and lock it into place.
- Ensure all connectors are fully inserted and secure.
-
Connect Power Wire:
- Disconnect the vehicle’s Negative (-) battery cable.
- Remove the fuse from the yellow fuse holder (provided).
- Attach the ring terminal to the Positive (+) battery cable and secure it.
- Connect the other end of the fuse holder to the black 12-gauge wire using the provided yellow butt connector.
-
Route Power Wire:
- Starting from the front of the vehicle, route the black 12-gauge wire rearward along the frame rail.
- Avoid hot pipes, heat shields, fuel tanks, or areas that may pinch or damage the wire.
Warning: Use caution when routing wires through grommets and along the exterior to avoid potential hazards.
-
Connect Power Wire to Black Box:
- Attach the black 12-gauge wire to the black power wire on the T-One® T-Connector’s black box using the provided yellow butt connector.
-
Reconnect Battery and Test:
- Reconnect the vehicle’s Negative (-) battery cable.
- Install the 15-amp fuse into the fuse holder.
- Test the installation with a test light or trailer.
- Reset the vehicle’s electrical system by temporarily removing the key from the ignition.
-
Reassemble Components:
- Reinstall trim panels, thresholds, and any other items removed during installation, ensuring wires are not pinched or damaged.
- Store the 4-Flat connector in the rear cargo area when not in use.
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings.
- Always wear safety glasses and follow all safety precautions during installation.
Manufacturer Notes:
- Do not exceed the lower of the tow vehicle’s manufacturer ratings or the product’s stated amperage ratings.
- Store these instructions for future reference.
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