








Trailer Wiring and Bracket For 15‑22 Volkswagen Golf 12‑19 VW Passat 4‑Flat Harness Plug Play
Model: 118646 118144Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Fits The Following Vehicles
2015 - 2022 Volkswagen, Golf, Except Sportwagen and R Models
2012 - 2019 Volkswagen, Passat, All Styles
Direct Plug & Play Wiring Kit
Wiring Specs
Part Number | 118646 |
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:
15 16 17 18 19 20 21 22 2015 2016 2017 2018 2019 2020 2021 2022
$90 89 $136.12 33% OFF
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Fits 's with the following styles:
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Fits 's with the following styles:
$136.12 $90 89
Questions? Call our Auto Experts at (877) 869-6690
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Product Details
- Brand: Tekonsha
- Model: 118646 118144
- Includes: T-One T-Connector Custom Harness, Mounting Bracket
Compatibility Chart
Year Range | Make | Model | Style |
---|---|---|---|
Loading... |
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 |
Be the first to ask a question.
Description
Plug and Play T-One Wiring Harness Connector
4-Flat Mounting Bracket
Fits The Following Vehicles
2015 - 2022 Volkswagen, Golf, Except Sportwagen and R Models
2012 - 2019 Volkswagen, Passat, All Styles
Direct Plug & Play Wiring Kit
Wiring Specs
Part Number | 118646 |
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:
15 16 17 18 19 20 21 22 2015 2016 2017 2018 2019 2020 2021 2022
Get Expert Help
Trailer Wiring and Bracket For 15-22 Volkswagen Golf 12-19 VW Passat 4-Flat Harness Plug Play Install Notes
Installation Instructions for T-Connector Adapter for Volkswagen Golf
Part Numbers:
- 118646
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 Cargo Area:
- Open the vehicle’s rear tailgate.
- Remove the threshold, trunk floor panels, and trays. Set aside all items carefully to avoid damage.
-
Access Interior Panels:
- Partially remove the rear interior trim panels on both the driver’s and passenger’s sides of the vehicle.
- Remove necessary trim panel fasteners, being cautious not to damage the panels.
-
Connect the Driver-Side T-Connector:
- Separate the vehicle’s wiring connectors on the driver’s side, ensuring not to damage the locking tabs.
- Insert the T-Connector with the yellow wire between the vehicle’s wiring connectors and lock into place.
- Ensure all connector surfaces are clean and secure.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector with the green wire below the threshold cover to the passenger-side taillight housing.
- Repeat Step 3 for the passenger-side T-Connector connection.
-
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 using the provided eyelet and screw.
Caution:
- Verify what is behind the surface before drilling to avoid damage or injury.
-
Mount the Black Box:
- Locate a flat surface in an out-of-the-way place and mount the T-Connector’s black box module to prevent damage or rattling.
-
Connect the Power Wire:
- Inside the vehicle, connect the black 12-gauge wire from the T-Connector black box to the provided black wire using the yellow butt connector.
- Route the black wire through a grommet or along the exterior frame, avoiding areas that may pinch or damage the wire.
-
Connect to the Vehicle Battery:
- Disconnect the negative (-) battery cable.
- Attach the ring terminal to the positive (+) battery cable and connect the fuse holder to the black 12-gauge wire using the yellow butt connector.
- Insert the 15-amp fuse into the fuse holder.
-
Reconnect the Battery:
- Reconnect the negative (-) battery cable.
- Test the installation with a test light or trailer.
Warning:
- Ensure all connections are complete for proper functionality.
-
Secure the Wiring:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that could pinch, cut, or melt the wires.
-
Reassemble the Vehicle:
- Replace all removed panels, trim pieces, thresholds, and storage covers, ensuring no wires are pinched or damaged.
Specifications:
- Max. stop/turn light: 2 per side (4.2 amps)
- Max. tail lights: 7.5 amps
Safety Notes:
- Do not exceed the towing manufacturer’s rating or the specified circuit ratings.
- Always wear safety glasses and follow safety precautions during installation.
Manufacturer Notes:
- Store the 4-flat connector in the rear cargo area when not in use.
- Refer to the vehicle owner’s manual for additional details.
Installation Instructions for T-Connector Adapter for Volkswagen Golf
Part Numbers:
- 118646
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 Cargo Area:
- Open the vehicle’s rear tailgate.
- Remove the threshold, trunk floor panels, and trays. Set aside all items carefully to avoid damage.
-
Access Interior Panels:
- Partially remove the rear interior trim panels on both the driver’s and passenger’s sides of the vehicle.
- Remove necessary trim panel fasteners, being cautious not to damage the panels.
-
Connect the Driver-Side T-Connector:
- Separate the vehicle’s wiring connectors on the driver’s side, ensuring not to damage the locking tabs.
- Insert the T-Connector with the yellow wire between the vehicle’s wiring connectors and lock into place.
- Ensure all connector surfaces are clean and secure.
-
Route the Passenger-Side T-Connector:
- Route the T-Connector with the green wire below the threshold cover to the passenger-side taillight housing.
- Repeat Step 3 for the passenger-side T-Connector connection.
-
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 using the provided eyelet and screw.
Caution:
- Verify what is behind the surface before drilling to avoid damage or injury.
-
Mount the Black Box:
- Locate a flat surface in an out-of-the-way place and mount the T-Connector’s black box module to prevent damage or rattling.
-
Connect the Power Wire:
- Inside the vehicle, connect the black 12-gauge wire from the T-Connector black box to the provided black wire using the yellow butt connector.
- Route the black wire through a grommet or along the exterior frame, avoiding areas that may pinch or damage the wire.
-
Connect to the Vehicle Battery:
- Disconnect the negative (-) battery cable.
- Attach the ring terminal to the positive (+) battery cable and connect the fuse holder to the black 12-gauge wire using the yellow butt connector.
- Insert the 15-amp fuse into the fuse holder.
-
Reconnect the Battery:
- Reconnect the negative (-) battery cable.
- Test the installation with a test light or trailer.
Warning:
- Ensure all connections are complete for proper functionality.
-
Secure the Wiring:
- Use the provided cable ties to secure the T-Connector harness, avoiding areas that could pinch, cut, or melt the wires.
-
Reassemble the Vehicle:
- Replace all removed panels, trim pieces, thresholds, and storage covers, ensuring no wires are pinched or damaged.
Specifications:
- Max. stop/turn light: 2 per side (4.2 amps)
- Max. tail lights: 7.5 amps
Safety Notes:
- Do not exceed the towing manufacturer’s rating or the specified circuit ratings.
- Always wear safety glasses and follow safety precautions during installation.
Technical Support:
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.
Manufacturer Notes:
- Store the 4-flat connector in the rear cargo area when not in use.
- Refer to the vehicle owner’s manual for additional details.
Warranty Information:
For complete warranty instructions, please download the full installation PDF.