Trailer Wiring and Bracket For 17‑21 Mazda CX‑5 All Styles Plug & Play 4‑Flat Harness
Model: 118746 118144Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Fits The Following Vehicles
2017 - 2021 Mazda, CX-5, All Styles
Wiring Kit Specs:
| Part Number | 118746 |
| 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:
17 18 19 20 21 2017 2018 2019 2020 2021
$82 08 $111.54 26% OFF
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Product Details
- Brand: Tekonsha
- Model: 118746 118144
- Includes: T-One T-Connector Custom Harness, Mounting Bracket
Compatibility Chart
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Fits The Following Vehicles
2017 - 2021 Mazda, CX-5, All Styles
Wiring Kit Specs:
| Part Number | 118746 |
| 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:
17 18 19 20 21 2017 2018 2019 2020 2021
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Trailer Wiring and Bracket For 17-21 Mazda CX-5 All Styles Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-One® T-Connector for Mazda CX-5
Part Numbers:
- 118746
Tools Required:
- Trim Panel Remover
- 10mm Socket & Ratchet or Wrench
- Drill (3/32” Drill Bit)
- 1/4” Socket
- Wire Crimpers
- Wire Cutters
- Phillips Head Screwdriver
- Test Probe
Step-by-Step Instructions:
-
Prepare the Vehicle:
- Open the tailgate and remove the cargo door on the floor.
- Carefully remove the floor trim panels and access panels on each side of the vehicle.
- Set aside all items removed, being careful not to damage them.
-
Locate the Taillight Wiring Harness:
- On both the driver and passenger sides of the vehicle, locate the vehicle’s taillight wiring harness inside the access panel area.
- The harness will have a connection point matching the ends of the T-One® Connector. Separate the connectors carefully, ensuring not to break the locking tabs. Ensure all connector surfaces are clean and free of dirt.
-
Connect the Driver-Side T-Connector:
- Insert the T-One® Connector end with the yellow wire between the vehicle wiring connectors and lock into place.
- Be cautious not to damage the locking tabs and ensure connectors are fully inserted with locking tabs in place.
-
Route the Passenger-Side T-Connector:
- Route the T-One® Connector end with the green wire through the trim panel access hole, across the threshold, and through the passenger trim panel access hole.
- Repeat Step 3 for the passenger side using the T-One® Connector harness end with the green wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the connector, such as the vehicle’s frame or crossmember.
- Clean dirt and rustproofing from the area, drill a 3/32” hole, and secure the white wire using the provided eyelet and screw.
Caution: Verify what is behind any surface before drilling to prevent damage or injury. Do not drill into exposed surfaces.
-
Connect the Power Wire:
- On the driver’s side, locate the black 12-gauge power wire from the T-One® Connector black box.
- Attach the provided black wire and route it along the exterior frame or follow existing wiring into the engine compartment up to the battery.
- Avoid areas that may pinch or break the wire.
Warning: If routing the wire through a grommet and along the exterior, avoid hot pipes, heat shields, the fuel tank, or any points that may pinch or break the wire.
-
Connect to the Vehicle Battery:
- Disconnect the vehicle’s Negative (-) battery cable.
- Remove the fuse from the yellow fuse holder.
- Attach the ring terminal to the Positive (+) battery cable and connect the other end of the fuse holder to the black 12-gauge wire using the provided yellow butt connector.
-
Reconnect the Battery and Test:
- Reconnect the vehicle’s Negative (-) battery cable.
- Insert the 15-amp fuse into the fuse holder.
- Test the installation with a test light or trailer.
-
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.
-
Store the 4-Flat Connector:
- Store the 4-flat connector in the spare tire compartment when not in use.
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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