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2004 - 2010 Volkswagen Touareg
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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: | 118509 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.5 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: | 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 | Notes |
|---|---|---|
| 2004 - 2010 | Volkswagen Touareg | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The 2004-2010 Volkswagen Touareg Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118509 (Part #TK118509) fits 2004-2010 Volkswagen Touareg models. The 2010 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2004-2010 Volkswagen Touareg Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118509 (Part #TK118509) fits the following vehicles: 2004-2010 Volkswagen Touareg. Always verify your specific year, make, and model before ordering.
Yes, the 2004-2010 Volkswagen Touareg Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118509 (Part #TK118509) is designed to fit the 2004-2010 Volkswagen Touareg.
The 2004-2010 Volkswagen Touareg Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118509 (Part #TK118509) Drilling is required for installation. Basic hand tools are typically all you need.
The T-Connector is a wiring harness module designed to integrate trailer lighting functions with your vehicle's electrical system. It includes a black box-module that processes signals from your vehicle's taillight connectors and routes them to a 4-Flat trailer connector, allowing you to connect a trailer with standard 4-pin lighting.
Yes, the T-Connector is designed for the Volkswagen Touareg. The manual does not specify model year restrictions, so compatibility should be confirmed with the manufacturer or retailer before purchase if your vehicle is significantly older or newer than the 2011 manual publication date.
You will need: trim panel remover, Torx 25 driver, 10mm socket and ratchet (or 10mm wrench), drill with 3/32" drill bit, 1/4" socket, wire crimpers, wire cutters, Phillips head screwdriver, test probe, and needlenose pliers.
The T-Connector includes: a black box-module with a grey 12-pin connector, T-Connector harness ends with yellow and green wires, a white grounding wire with eyelet, a red 12 ga. power wire, a black 12 ga. wire, a yellow fuse holder with 10 amp fuse, a yellow butt connector, a ring terminal, cable ties, and a 4-Flat connector for the trailer. A screw is provided to secure the grounding wire eyelet.
Yes. You must disconnect the vehicle's negative (-) battery cable before connecting the power wiring to the battery. The manual specifies this in step 16. After all connections are complete, you reconnect the negative battery cable and install the 10 amp fuse in step 17.
You must remove the taillight housings on both driver and passenger sides by removing two Torx-25 screws from each side (after prying off plastic screw caps). You also need to partially remove the plastic threshold cover, side panels, and cargo trays to access the vehicle's rear wiring harness. The taillight assemblies are reinstalled at the end of installation.
Using needlenose pliers, carefully squeeze the locking tab on the back of the female housing to separate the connectors. The manual notes that connector surfaces must be clean and free of dirt before reconnection. Be careful not to break the locking tabs during separation.
1. Disconnect the driver's side taillight connector from the vehicle. 2. Route the T-Connector end with the yellow wire through the grommet hole and insert it between the vehicle's taillight connectors, locking it in place. 3. Reseat the grommet around the wires. 4. Route the T-Connector end with the green wire across the threshold to the passenger side. 5. Repeat the same process on the passenger side with the green wire connector. Connectors may require extra pressure to insert fully.
Mount the black box-module on a flat surface in the interior of the vehicle, in an out-of-the-way location that is free of moisture and high enough to avoid direct contact with water or liquid. The module must ONLY be mounted in the interior; mounting on the exterior or in areas exposed to elements or moisture could cause serious damage to the vehicle and module. Secure it with cable ties to prevent damage or rattling.
Route the 4-Flat connector to the jack storage area. Store the 4-Flat in the jack storage compartment when not in use.
Yes. You must drill 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.
Drill a 3/32" hole on the driver's side near the taillight connectors. This hole is used to secure the white grounding wire with an eyelet using the screw provided. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury, and do not drill into any exposed surfaces.
1. Disconnect the vehicle's negative (-) battery cable. 2. Locate the red 12 ga. power wire from the T-Connector box and attach the black 12 ga. wire provided. 3. Route the black wire along the exterior frame or follow existing wiring along the thresholds into the engine compartment up to the battery, avoiding areas that may pinch or break the wire. 4. Remove the fuse from the yellow fuse holder provided. 5. After cutting the fuse holder wire, attach the ring terminal and secure it to the vehicle's positive (+) battery cable. 6. Connect the other end of the fuse holder to the black 12 ga. wire using the yellow butt connector provided. 7. Reconnect the negative battery cable and install the 10 amp fuse into the fuse holder.
An alternate power attachment method is available: using a trim panel puller, temporarily remove the driver's side plastic engine cover to expose the auxiliary power stud near the firewall. Remove the red cover to expose the stud. Remove the nut, place the ring terminal on the stud, and replace the nut. This provides an alternative connection point to the positive battery supply.
Use a 10 amp fuse. The yellow fuse holder is provided with the T-Connector, and the 10 amp fuse is installed in step 17 after all connections are complete.
The T-Connector uses the following wire colours: yellow wire (one T-Connector end for driver's side taillight connection), green wire (second T-Connector end for passenger's side taillight connection), white wire (grounding wire), red wire (power from the T-Connector box), and black wire (power to the battery). The grey 12-pin connector connects the T-Connector harness to the black box-module.
Do not exceed the lower of your vehicle manufacturer's rating or: maximum stop/turn lights: 2 per side (4.2 amps total); maximum tail lights: 7.5 amps. Overloading the circuit can cause fires. Refer to your vehicle's owner's manual and instruction sheet for additional information.
Wear safety glasses and use all safety precautions during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle and/or personal injury. Do not drill into any exposed surfaces. When routing wires, avoid areas that would pinch, cut, or melt the wire. Read and follow all warnings and cautions printed on the tow vehicle's battery. Ensure all connections are complete and properly seated before testing.
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. All connections must be complete for the T-Connector to function properly.
After reinstalling the taillight assemblies and other items removed during installation, carefully ensure that wires are not pinched or cut. Verify that all connections are secure and that the T-Connector functions properly by testing with a test light or trailer.
Insert the T-Connector end between the vehicle's taillight connectors and lock into place. Connectors may require extra pressure to insert together. Be careful not to damage the locking tabs and ensure that connectors are fully inserted with locking tabs in place. All connector surfaces should be clean and free of dirt before insertion.
Remove the grommet from the vehicle harness by untaping the tabs and slitting it as shown in the manual. Place the grommet onto the T-Connector wiring between the T-Connector and the mating vehicle end. Retape the tabs to secure the grommet, then reseat the grommet into the hole on the vehicle. After routing connectors through the hole into the cargo area, reseat the grommet around the wires.
Locate the T-Connector's grey 12-pin connector and insert it into the mating connector located on the black box-module. Check that the mating surfaces of the wiring connectors match. All connector surfaces should be clean and free of dirt. Be careful not to damage the locking tabs and ensure that connectors are fully inserted with locking tabs in place.
Secure the T-Connector harness with the cable ties provided. When routing and securing wires, be careful to avoid any areas that would pinch, cut, or melt the wire. This applies to both the initial harness routing and the final securing of remaining harness sections after all connections are complete.
The T-Connector is designed for the Volkswagen Touareg. Confirm compatibility with the manufacturer or retailer if your vehicle model year differs significantly from the 2011 manual publication date.
Do not exceed: 2 stop/turn lights per side (4.2 amps total) or 7.5 amps for tail lights. Overloading can cause fires. Refer to your vehicle's owner's manual for additional information.
Mount the black box-module 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. Never mount it on the exterior or in areas exposed to elements.
Total for 3 items:
$75.95
Matt
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May 22, 2023
