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Tekonsha
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2016 - 2019 Volkswagen Golf SportWagen
Confirmed to Fit


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We know our products
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Tekonsha T-One connector (also referred to as T-Connector) wiring harnesses are the fastest and easiest way to add an electrical connector to the back of your vehicle. These connectors are used to link the wiring from your vehicle to the trailer when towing. Tekonsha T-One connectors feature custom designs to fit each vehicle make and model based on manufacturer specifications. Plus, the Plug & Play connectors on the end of the wires make it easy to install. No cutting or splicing!
Tekonsha offers the largest, most complete line of T-One connectors. To install a Tekonsha T-One wiring harness, simply locate your vehicle's wiring harness connector typically behind the vehicle taillight - unplug the connection and insert the T-Connector into the vehicle's harness. It's that easy! So what are you waiting for? Hit the road with the peace of mind only Tekonsha can provide. Life's a Journey. Stop Often.
| BRAND: | TEKONSHA |
| PART NUMBER: | 118730 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.68 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| CIRCUIT PROTECTED: | YES |
| HARNESS TYPE: | MALE FEMALE |
| TERMINAL QUANTITY: | 4 |
| WIRE COLORS: | BROWN, GREEN, YELLOW, WHITE |
| WIRE QUANTITY: | 4 |
| WIRE GAUGE: | 16 GA. |
| POWER LEAD REQUIRED: | YES |
| ELECTRICAL SYSTEM TYPE: | 2-WIRE SYSTEM |
| HARDWARE INCLUDED: | YES |

Tekonsha is a leading manufacturer of electronic trailer brake controllers, pioneering the category in the 1970s. The lineup spans proportional units such as the Prodigy P3 and Prodigy iD, time-delayed controllers, the wireless Prodigy RF, plus vehicle-specific wiring harnesses, adapters and trailer brake components engineered for smooth, predictable stopping at any speed.
Tekonsha Engineering Company began in 1964 building RV steps and mirrors. Within a few years it had found its real calling, and by the 1970s Tekonsha was pioneering the manufacture of electronic trailer brake controllers, the product category that still defines the brand. More than half a century later it remains the reference name in trailer braking and is part of the Horizon Global group alongside Reese, Draw-Tite, Fulton, Bulldog and Wesbar.
A brake controller is the component that tells a trailer's electric brakes how hard to work and when, and getting that right is the difference between a controlled stop and a shove from behind. Tekonsha builds both major types. Proportional controllers use an internal accelerometer to sense how quickly the tow vehicle is slowing and apply trailer braking to match, so light braking stays light and hard braking is immediate. Time-delayed controllers ramp to a preset output over a fixed interval, a simpler and more economical approach that suits occasional towing.
The current brake controller range covers most of that ground. The Prodigy iD pairs with a phone through Tekonsha's EDGE technology for setup and monitoring, the P3 offers storable settings for multiple trailers and a trilingual colour LED display, the Prodigy P2 adds a dimmable display and boost mode for heavier loads, and the Voyager keeps operation simple and dependable. The Prodigy RF mounts to the trailer itself and controls wirelessly, which suits rental fleets and drivers who swap tow vehicles.
Installation is supported by vehicle-specific brake control harnesses that plug into a factory connector rather than requiring cut-and-splice wiring, along with mounting brackets and adapters. Matched controller bundles pair a unit with the correct harness. Products are tested to meet and often exceed published industry standards.
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2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2017 | Volkswagen Golf Alltrack | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2016 - 2019 | Volkswagen Golf SportWagen | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |


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Yes, the 2017-2017 Volkswagen Golf Alltrack, 2016-2019 Volkswagen Golf SportWagen Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118730 (Part #TK118730) is designed to fit the 2017 Volkswagen Golf Alltrack.
The 2017-2017 Volkswagen Golf Alltrack, 2016-2019 Volkswagen Golf SportWagen Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118730 (Part #TK118730) fits 2017 Volkswagen Golf Alltrack models. The 2019 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2017-2017 Volkswagen Golf Alltrack, 2016-2019 Volkswagen Golf SportWagen Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118730 (Part #TK118730) fits the following vehicles: 2017 Volkswagen Golf Alltrack; 2016-2019 Volkswagen Golf SportWagen. Always verify your specific year, make, and model before ordering.
The 2017-2017 Volkswagen Golf Alltrack, 2016-2019 Volkswagen Golf SportWagen Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118730 (Part #TK118730) Drilling is required for installation. Basic hand tools are typically all you need.
Yes, the T-One® T-Connector (118730-037) is designed for the Volkswagen Golf Sportwagen. The installation instructions are specific to this vehicle model.
The T-One® T-Connector is a wiring harness that connects to your vehicle's taillight connectors and battery to provide a 4-flat trailer connector for towing. It uses T-Connector ends with colour-coded wires (yellow and green) that tap into the vehicle's existing taillight wiring on both driver and passenger sides.
You will need a drill with a 3/32" bit, safety glasses, and a screwdriver. The manual also recommends having a test light or trailer available to verify the installation after completion. All fasteners, connectors, cable ties, and the fuse holder are supplied with the product.
Yes. Step 8 requires you to disconnect the vehicle's negative (−) battery cable before connecting the fuse holder to the positive battery cable. This is a critical safety step.
You must open the rear tailgate and remove the threshold, trunk floor panels, and trays (step 1). You must also partially remove the rear interior trim panels on both the driver and passenger sides by removing several trim panel fasteners (step 2). Set all removed items aside carefully to avoid damage.
Yes. Step 5 requires drilling a 3/32" hole on the driver's side near the taillight connectors to secure the white grounding wire with an eyelet and screw. Before drilling, you must verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into any exposed surfaces.
On the driver's side, separate the vehicle's taillight wiring connectors carefully without breaking the locking tabs. Insert the T-One® T-Connector end with the yellow wire between the vehicle connectors and lock it into place. Ensure all connector surfaces are clean and free of dirt. Repeat this process on the passenger's side using the T-One® T-Connector with the green wire, routing it below the threshold cover to the passenger's side taillight housing.
Locate a flat surface in an out-of-the-way place inside the vehicle and mount the black box module there. This placement prevents damage and rattling during vehicle operation.
From inside the vehicle, connect the black 12 ga. wire from the T-One® black box module to the supplied yellow butt connector. Then route the black wire either through a grommet and along the exterior frame, or follow the existing wiring along the thresholds into the engine compartment up to the battery. Avoid areas that may pinch or break the wire. If routing externally, be careful to avoid hot pipes, heat shields, the fuel tank, and other pinch points.
Step 8 requires: (1) Disconnect the vehicle's negative (−) battery cable. (2) Remove the fuse from the yellow fuse holder if not already removed. (3) Cut the fuse holder wire and attach the ring terminal to the vehicle's positive (+) battery cable. (4) Connect the other end of the fuse holder to the black 12 ga. wire using the supplied yellow butt connector. All connections must be complete for the T-One® T-Connector to function properly.
Use the supplied cable ties to secure the remainder of the harness, being careful to avoid any areas that would pinch, cut, or melt the wire. This prevents damage and rattling during vehicle operation.
After installation is complete, test and verify 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. This ensures all connections are working properly before towing.
Do not exceed the lower of the towing manufacturer rating (as stated in your vehicle owner's manual) or the specific amperage ratings stated on the product. Overloading circuits can cause fires. Refer to the product label and your vehicle's owner's manual for the exact amperage specification.
Store the 4-flat connector in the rear cargo area when not in use.
No. You only need to partially remove the rear interior trim panels on both the driver and passenger sides. Several trim panel fasteners will need to be removed to access the taillight connectors, but you do not need to remove the panels completely.
After the installation is complete, reinstall the plastic trim panels, threshold, storage covers, floor covering, and other items that were removed during installation. Be careful not to pinch or cut the wires when reinstalling these components.
Always wear safety glasses during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces. When routing wires, avoid hot pipes, heat shields, the fuel tank, and other areas that may pinch or break the wire. Read and follow all warnings and instructions printed on the vehicle's battery before making electrical connections.
Yes, the T-One® T-Connector (118730-037) is designed specifically for the Volkswagen Golf Sportwagen.
Yes, you must disconnect the vehicle's negative (−) battery cable before connecting the fuse holder to the positive battery cable in step 8.
Do not exceed the lower of the towing manufacturer rating (in your vehicle owner's manual) or the specific amperage ratings stated on the product. Overloading can cause fires.

Matt
The staff was able to quickly assist me with locating the correct product I needed. Shipping was really fast. Item arrived in 2 days. Will be using TowUniverse again!!
May 22, 2023