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Tekonsha
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2011 - 2018 Volkswagen Jetta
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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: | 118572 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 2 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: | NO |
| ELECTRICAL SYSTEM TYPE: | 3-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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1 compatible vehicles
| Year | Make & Model | Style | Notes |
|---|---|---|---|
| 2011 - 2018 | Volkswagen Jetta | Sedan · 4-Door | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118572 (Part #TK118572) fits the following vehicles: 2011-2018 Volkswagen Jetta. Always verify your specific year, make, and model before ordering.
Yes, the Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118572 (Part #TK118572) is designed to fit the 2011-2018 Volkswagen Jetta.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118572 (Part #TK118572) fits 2011-2018 Volkswagen Jetta models. The 2018 model year is the last year covered by this part number. For newer models, check for an updated version.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118572 (Part #TK118572) Drilling is required for installation. Basic hand tools are typically all you need.
Yes, this T-Connector is designed for the Volkswagen Jetta Sedan. The manual provides complete installation instructions specific to this vehicle model.
The T-Connector is a trailer wiring interface that connects to your vehicle's taillight wiring harness. It includes a black box-module that must be mounted inside the vehicle to enable trailer lighting functions.
You will need: trim panel remover, 10 mm socket and ratchet or 10 mm wrench, drill with 3/32" bit, 1/4" socket, wire crimpers, wire cutters, Phillips head screwdriver, and a test-probe.
Yes. You must disconnect the vehicle's negative (-) battery cable before connecting the power wire to the positive battery terminal. This is done in step 7 before attaching the ring terminal and fuse holder to the positive battery cable.
The black box-module must be mounted ONLY in the interior of the vehicle on a flat, out-of-the-way surface that is free of moisture and high enough to avoid direct contact with water or liquid. It must never be mounted on the exterior or in areas exposed to elements or moisture, as this could cause serious damage to the vehicle and module.
1. Open the trunk and remove the threshold panel. Partially remove the felt trunk liner on both sides to expose the taillight wiring harness. 2. Locate the taillight wiring harness on both driver and passenger sides and separate the connectors carefully without breaking the locking tabs. 3. On the driver's side, insert the T-Connector end with the yellow wire between the vehicle connectors and lock into place. 4. Route the T-Connector end with the green wire under the felt trunk liner to the passenger side and repeat the connection. Ensure all connector surfaces are clean and all locking tabs are fully engaged.
Yes. You must drill a 3/32" hole on the driver's side near the taillight connectors to secure the white ground wire with an eyelet and screw. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into any exposed surfaces.
The T-Connector uses the following wires: yellow wire (driver's side taillight connection), green wire (passenger's side taillight connection), white wire (ground connection to vehicle frame), and red 12 gauge wire (power input from T-Connector). A black 12 gauge wire is provided to connect the red power wire to the vehicle's positive battery terminal via a fuse holder.
The red 12 gauge power wire from the T-Connector is connected to a black 12 gauge wire. This black wire is routed along the exterior frame or following existing wiring along the thresholds into the engine compartment up to the battery, avoiding areas that may pinch or break the wire. The black wire connects to the vehicle's positive battery terminal through a yellow fuse holder containing a 15 amp fuse.
The fuse rating is 15 amps. The fuse is installed in a yellow fuse holder that connects the black 12 gauge power wire to the vehicle's positive battery terminal.
Locate the grey 12-pin connector on the T-Connector harness and insert it into the mating connector on the black box-module. Ensure the mating surfaces match, all connector surfaces are clean and free of dirt, and the connectors are fully inserted with locking tabs in place. Be careful not to damage the locking tabs.
Do not exceed the lower of the vehicle manufacturer's rating or: maximum 2 stop/turn lights per side (4.2 amps total) or maximum tail lights (7.5 amps). Overloading the circuit can cause fires. Refer to your vehicle's owner's manual for additional information.
All connections must be complete before testing. To test: 1. Reset the vehicle electrical system by temporarily removing the key from the ignition. 2. Re-insert the key and turn it to the proper position. 3. Test and verify the installation with a test light or by connecting an actual trailer. This confirms all connections are working properly.
Store the 4-flat connector in the rear cargo area (trunk or rear cargo area) when not in use.
After all connections are made and tested: 1. Replace the trunk threshold panel, floor coverings, and felt trunk liner that were removed during installation. 2. Secure the remainder of the T-Connector harness with the cable ties provided to prevent damage, rattling, and to avoid areas that would pinch, cut, or melt the wire.
Before drilling the 3/32" hole for the ground wire, you must verify what is behind the surface to avoid damage to the vehicle and/or personal injury. Do not drill into any exposed surfaces. This caution applies to all drilling during installation.
Locate a suitable grounding point on the driver's side near the taillight connectors. Drill a 3/32" hole and secure the white wire with an eyelet using the screw provided. Do not drill into any exposed surfaces.
Route the black 12 gauge power wire along the exterior frame or follow existing wiring along the thresholds into the engine compartment. Avoid areas that may pinch or break the wire. The wire must reach the vehicle's positive battery terminal where it connects through the yellow fuse holder.
The yellow butt connector is used to join the black 12 gauge power wire to the fuse holder wire. This connection is made after the ring terminal is attached to the vehicle's positive battery cable, creating the complete power circuit from the battery through the fuse to the T-Connector.
The T-Connector (118572-037) is designed for the Volkswagen Jetta Sedan.
Trim panel remover, 10 mm socket/ratchet or wrench, drill with 3/32" bit, 1/4" socket, wire crimpers, wire cutters, Phillips screwdriver, and test-probe.
Yes, disconnect the vehicle's negative battery cable before connecting the power wire to the positive terminal in step 7.
15 amps. The fuse is installed in the yellow fuse holder that connects the black power wire to the vehicle's positive battery terminal.
Do not exceed: 2 stop/turn lights per side (4.2 amps) or 7.5 amps for tail lights. Overloading can cause fires.
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Ordered online. Shipment arrived on time and with all the correct parts. Great customer service and friendly staff. Also, pricing was great!
May 22, 2023
