Trailer Wiring and Bracket w/ Light Tester For 15‑24 Ford Transit‑350 ( Dually Models ONLY ) Plug & Play 4‑Flat Harness
Model: 118722 118144 20114Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2015 - 2024 Ford, Transit-350, Dually Models ONLY
Wiring Kit Specs:
| Part Number | 118722 |
| 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 |
| Part Number | 20114 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| 4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
| Warranty | 1 Year |
Partial list of fitment years: 15 16 17 18 19 20 21 22 23 24 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
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Product Details
- Brand: Tekonsha
- Model: 118722 118144 20114
- Includes: T-One T-Connector Custom Harness, Mounting Bracket, 4-Flat Car End Tester
Compatibility Chart
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
4-Flat Car End Tester w/ LED Display
Fits The Following Vehicles:
2015 - 2024 Ford, Transit-350, Dually Models ONLY
Wiring Kit Specs:
| Part Number | 118722 |
| 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 |
| Part Number | 20114 |
| Fits | 4 Flat Connectors |
| Brand | Tow Ready |
| 4-Flat Car End Tester w/LED Display Plug these testers into any car connector and you will have an instant test of running light circuits. |
|
| Warranty | 1 Year |
Partial list of fitment years: 15 16 17 18 19 20 21 22 23 24 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
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Trailer Wiring and Bracket w/ Light Tester For 15-24 Ford Transit-350 ( Dually Models ONLY ) Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-One® T-Connector for Ford Transit 350
Part Numbers:
- 118722
Tools Required:
- Trim Panel Remover
- Drill (3/32” Drill Bit)
- Phillips Head Screwdriver
- Test Probe
- Flat Screwdriver
Step-by-Step Instructions:
-
Remove the Taillights:
- Open the rear door and remove the screws securing the taillights on both the driver and passenger sides.
- Carefully pull the taillights away from the vehicle, avoiding damage to the alignment pins.
-
Disconnect the Wiring Harness:
- Locate the vehicle’s taillight wiring harness on both sides. The harness will have a connection point matching the ends of the T-One® T-Connector.
- Separate the connector carefully, ensuring not to break the locking tabs. Clean all connectors to ensure a proper connection.
-
Install the Driver-Side T-Connector:
- Insert the T-One® T-Connector end with the yellow wire between the vehicle wiring connectors and lock it into place. Ensure the connectors are fully inserted with locking tabs secured.
-
Route the Green Wire to the Passenger Side:
- Route the harness containing the green wire and 4-flat connector through the opening behind the driver-side taillight.
- Continue routing underneath the vehicle to the passenger side, bringing the green wire up through the opening behind the passenger-side taillight.
Warning: Avoid hot pipes, heat shields, fuel tanks, or other areas where the wire could be pinched or damaged.
-
Install the Passenger-Side T-Connector:
- Repeat Step 3 for the passenger side using the T-One® T-Connector end with the green wire.
-
Ground the White Wire:
- Locate a suitable grounding point near the connectors on the driver’s side.
- Drill a 3/32” hole and secure the white wire with the provided eyelet and screw.
Caution: Verify the surface before drilling to avoid vehicle damage or personal injury.
-
Prepare the Power Wire:
- Open the hood and locate the positive 12V power post. Using a 15mm socket, remove the nut.
- If not already done, remove the fuse from the yellow fuse holder. Attach the ring terminal to the positive battery post and secure it with the removed nut.
- Connect the other end of the fuse holder to the black 12-gauge power wire using the yellow butt connector.
-
Route the Power Wire:
- Route the black wire from the engine compartment to the rear driver’s side of the vehicle.
- Connect the black wire to the red power wire located on the T-One® T-Connector black box using the yellow butt connector.
Warning: Avoid routing the wire near hot pipes, heat shields, or fuel tanks.
-
Reconnect the Battery:
- Reconnect the vehicle’s negative (-) battery cable.
- Install the 15-amp fuse into the fuse holder.
Warning: Ensure all connections are complete before testing. 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.
-
Mount the T-One® Black Box:
- Mount the black box using the provided double-sided tape. Ensure the epoxy side faces downward to prevent water accumulation.
- Secure the remainder of the T-One® harness with the provided cable ties, avoiding areas that could pinch, cut, or damage the wire.
-
Reassemble the Vehicle:
- Reinstall the taillight housing assemblies and any panels or trim removed earlier. Ensure the wiring is properly routed and secured.
-
Store the 4-Flat Connector:
- Mount the 4-flat connector in an accessible location using a bracket or electrical box (not included).
Specifications:
- Max. stop/turn light: 4.2 amps per side
- Max. tail lights: 7.5 amps
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings or vehicle manufacturer specifications.
- Always wear safety glasses and follow all safety precautions during installation.
Manufacturer Notes:
- Refer to the vehicle owner’s manual for additional details.
- Store these instructions for future reference.
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