








Trailer Wiring and Bracket For 13‑16 Scion FR‑S 13‑21 BRZ 17‑24 Subaru Impreza 17‑20 Toyota 86 Plug & Play 4‑Flat Harness
Model: 118629 118144Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Installation Instructions
Fits The Following Vehicles
2013 - 2016 Scion, FR-S, All Styles
2013 - 2021 Subaru, BRZ, All Styles
2017 - 2024 Subaru, Impreza, Sedan, Except WRX & WRX STi
Direct Plug & Play Wiring Kit
Wiring Specs
Part Number | 118629 |
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:
13 14 15 16 17 18 19 20 21 22 23 24 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
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Fits 's with the following styles:
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Fits 's with the following styles:
$99.08 $76 93
Questions? Call our Auto Experts at (877) 869-6690
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Product Details
- Brand: Tekonsha
- Model: 118629 118144
- Includes: T-One T-Connector Custom Harness, Mounting Bracket
Compatibility Chart
Year Range | Make | Model | Style |
---|---|---|---|
2013 - 2020 | Subaru | BRZ | All Models |
2013 - 2016 | Scion | FR-S | All Models |
2017 - 2023 | Subaru | Impreza | 4-Door Sedan |
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Installation Instructions
Fits The Following Vehicles
2013 - 2016 Scion, FR-S, All Styles
2013 - 2021 Subaru, BRZ, All Styles
2017 - 2024 Subaru, Impreza, Sedan, Except WRX & WRX STi
Direct Plug & Play Wiring Kit
Wiring Specs
Part Number | 118629 |
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:
13 14 15 16 17 18 19 20 21 22 23 24 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Specification | |
Circuit Protected | Yes |
Hardware Included | Yes |
Harness Type | 4-Way Flat (Vehicle Side) |
Terminal Quantity | 4 |
Universal Or Specific Fit | Specific Fit |
Wire Colors | Brown, Green, Yellow, White |
Wire Quantity | 4 Wires |
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Trailer Wiring and Bracket For 13-16 Scion FR-S 13-21 BRZ 17-24 Subaru Impreza 17-20 Toyota 86 Plug & Play 4-Flat Harness Install Notes
Installation Instructions for T-Connector Adapter for Scion FR-S
Part Numbers:
- 118629
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:
-
Open the Trunk:
- Remove the threshold panel.
- Partially remove the corner felt trunk liner on both sides to expose the vehicle’s taillight wiring harness.
-
Locate the Taillight Wiring Harness:
- On both sides of the vehicle, locate the taillight wiring harness connection points.
- Separate the connectors carefully, ensuring not to break the locking tabs.
- Ensure all connector surfaces are clean and free of dirt.
-
Install the Driver-Side T-Connector:
- Insert the T-Connector end with the yellow wire between the driver’s side wiring connectors.
- Lock the connectors securely into place.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector containing the green wire below the threshold cover to the passenger-side taillight housing.
- Repeat Step 3 to connect the green wire.
-
Ground the White Wire:
- Locate a suitable grounding point on the driver’s side near the connectors.
- Drill a 3/32” hole and secure the white wire with the provided eyelet and screw.
Caution:
- Verify the area behind the surface before drilling to avoid damage or injury.
-
Mount the Black Box:
- Mount the T-Connector black box on the driver’s side using the provided double-sided tape.
-
Connect the Power Wire:
- Inside the vehicle, connect the black 12-gauge wire to the red wire from the T-Connector black box using the supplied yellow butt connector.
- Route the black wire through a grommet and along the vehicle’s exterior frame to the battery in the engine compartment.
Warning:
- Avoid routing near hot pipes, heat shields, fuel tanks, or areas where the wire could be pinched or damaged.
-
Connect to the Vehicle Battery:
- Disconnect the vehicle’s negative (-) battery cable.
- Attach the yellow fuse holder to the positive (+) battery cable using the provided ring terminal.
- Connect the black wire to the fuse holder using the yellow butt connector.
- Insert the 10-amp fuse into the fuse holder.
-
Reconnect the Battery:
- Reconnect the vehicle’s negative (-) battery cable.
Warning:
- Ensure all connections are complete. Test the installation with a test light or trailer.
-
Secure the Wiring:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Replace the plastic trim panels, threshold, storage covers, floor covering, and any other items removed during installation, ensuring no wires are pinched or damaged.
-
Store the 4-Flat Connector:
- Store the 4-flat connector in the trunk area when not in use.
Specifications:
- Max. stop/turn light: 2.1 amps per side
- Max. tail lights: 5.6 amps
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:
- Refer to the vehicle owner’s manual and instruction sheet for additional details.
- Store these instructions for future reference.
Installation Instructions for T-Connector Adapter
Part Numbers:
- 118629
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:
-
Open the Trunk:
- Remove the threshold panel.
- Partially remove the corner felt trunk liner on both sides to expose the vehicle’s taillight wiring harness.
-
Locate the Taillight Wiring Harness:
- On both sides of the vehicle, locate the taillight wiring harness connection points.
- Separate the connectors carefully, ensuring not to break the locking tabs.
- Ensure all connector surfaces are clean and free of dirt.
-
Install the Driver-Side T-Connector:
- Insert the T-Connector end with the yellow wire between the driver’s side wiring connectors.
- Lock the connectors securely into place.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector containing the green wire below the threshold cover to the passenger-side taillight housing.
- Repeat Step 3 to connect the green wire.
-
Ground the White Wire:
- Locate a suitable grounding point on the driver’s side near the connectors.
- Drill a 3/32” hole and secure the white wire with the provided eyelet and screw.
Caution:
- Verify the area behind the surface before drilling to avoid damage or injury.
-
Mount the Black Box:
- Mount the T-Connector black box on the driver’s side using the provided double-sided tape.
-
Connect the Power Wire:
- Inside the vehicle, connect the black 12-gauge wire to the red wire from the T-Connector black box using the supplied yellow butt connector.
- Route the black wire through a grommet and along the vehicle’s exterior frame to the battery in the engine compartment.
Warning:
- Avoid routing near hot pipes, heat shields, fuel tanks, or areas where the wire could be pinched or damaged.
-
Connect to the Vehicle Battery:
- Disconnect the vehicle’s negative (-) battery cable.
- Attach the yellow fuse holder to the positive (+) battery cable using the provided ring terminal.
- Connect the black wire to the fuse holder using the yellow butt connector.
- Insert the 10-amp fuse into the fuse holder.
-
Reconnect the Battery:
- Reconnect the vehicle’s negative (-) battery cable.
Warning:
- Ensure all connections are complete. Test the installation with a test light or trailer.
-
Secure the Wiring:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that may pinch, cut, or melt the wire.
-
Reassemble the Vehicle:
- Replace the plastic trim panels, threshold, storage covers, floor covering, and any other items removed during installation, ensuring no wires are pinched or damaged.
-
Store the 4-Flat Connector:
- Store the 4-flat connector in the trunk area when not in use.
Specifications:
- Max. stop/turn light: 2.1 amps per side
- Max. tail lights: 5.6 amps
Safety Notes:
- Overloading circuits can cause fires. Do not exceed stated product ratings.
- Always wear safety glasses and follow all safety precautions during installation.
Attention: This is a summary of the installation procedure. For complete installation instructions, including diagrams and detailed information from the manufacturer, please download the full installation PDF.
For technical support and assistance: Our team of experts is available to help. You can reach our tech support by visiting www.trailerjacks.com or calling 877-869-6690.
Warranty Information:
For complete warranty instructions, please download the full installation PDF.
Manufacturer Notes:
- Refer to the vehicle owner’s manual and instruction sheet for additional details.
- Store these instructions for future reference.