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Tekonsha
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Original price was $171.25. Current price is $134.13.2022 - 2024 Genesis GV70
Confirmed to Fit
2021 - 2024 Genesis GV80
Confirmed to Fit
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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: | 118851 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.55 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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Yes, the 2022-2024 Genesis GV70, 2021-2024 Genesis GV80 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118851 (Part #TK118851) is designed to fit the 2022-2024 Genesis GV70.
The 2022-2024 Genesis GV70, 2021-2024 Genesis GV80 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118851 (Part #TK118851) fits the following vehicles: 2022-2024 Genesis GV70; 2021-2024 Genesis GV80. Always verify your specific year, make, and model before ordering.
The 2022-2024 Genesis GV70, 2021-2024 Genesis GV80 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118851 (Part #TK118851) fits 2022-2024 Genesis GV70 models. The 2024 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2022-2024 Genesis GV70, 2021-2024 Genesis GV80 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118851 (Part #TK118851) Drilling is required for installation. Basic hand tools are typically all you need.
The T-One® Connector is a trailer wiring harness connector system that integrates with your vehicle's existing tail light wiring to provide trailer lighting control. It uses a black module mounted underneath the vehicle and connects to both driver's and passenger's side tail lights via yellow and green wires, allowing your vehicle to control trailer lights when towing.
The manual shows installation on a Hyundai Genesis. However, the manual does not specify model years, body styles, cab configurations, or whether it fits other vehicles. Contact the manufacturer or check the product listing to confirm fitment for your specific vehicle.
You will need: trim panel remover, 10 mm socket and ratchet or 10 mm wrench, drill with 3/32" drill bit, wire crimpers, wire cutters, Phillips head screwdriver, and a test probe. A utility knife is also needed to slit the floor pan grommet. A fish wire is recommended (not required) to help route the harness through tight spaces.
The kit includes: two T-One® Connector ends (yellow and green wire), a black module box, double-sided tape for mounting, a white ground wire with eyelet and screw, a yellow fuse holder with 15 amp fuse, two yellow butt connectors, and a black 12 gauge power wire. All fasteners and connectors needed for installation are provided.
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 10 after routing the black 12 gauge wire from the module to the battery. Reconnect the negative cable only after the fuse is installed in step 13.
Yes. You must remove the trim panels covering the tail lights, then use a 10 mm socket to remove the mounting screws from both driver's and passenger's side tail lights. Be careful not to break the trim panel mounting tabs. The tail lights are then disconnected and set aside during installation.
Yes. In step 9, you must remove the threshold and cargo tray from the rear cargo area to access the battery. These items are reinstalled in step 14 after the electrical connections are complete.
Drilling may be required. You must drill a 3/32" hole to secure the white ground wire using the provided eyelet and screw, unless a suitable existing ground stud is available near the connector. You must also use a utility knife to slit the floor pan grommet in the rear cargo area to route the black 12 gauge power wire underneath the vehicle. Do not drill into the vehicle floor or bed.
No. You must locate a suitable grounding point near the connector, such as an existing ground stud. If you need to drill, you may drill a 3/32" hole, but you must not drill into the vehicle floor or bed. Before drilling, verify what is behind the surface to avoid damage to the vehicle and personal injury. Clean dirt and rustproofing from the area before securing the white ground wire.
The T-One® Connector uses a 15 amp fuse. The fuse is installed in the yellow fuse holder provided in the kit and is connected to the vehicle's positive (+) battery cable. The fuse must be installed in step 13 after all other electrical connections are complete.
The black power wire connecting the module to the battery is 12 gauge (12 ga.). The white ground wire is also included but its gauge is not specified in the manual. The yellow and green wires connecting to the tail lights are part of the T-One® Connector ends and their gauge is not specified.
The yellow wire connects to the driver's side tail light connector. The green wire connects to the passenger's side tail light connector. These wires allow the module to receive tail light signals from the vehicle. The white wire provides a ground connection near the module. The black 12 gauge wire carries power from the vehicle's positive battery terminal to the module.
Route the yellow wire harness from underneath the vehicle up through the opening between the rear bumper and body to the driver's side tail light pocket. Route the green wire harness similarly to the passenger's side tail light pocket. Route the black 12 gauge power wire from the module through the slitted floor pan grommet in the rear cargo area underneath the vehicle to the battery. The manual recommends using a fish wire between the tail light pocket and rear fascia to help pull the harnesses through tight spaces.
Mount the black module box underneath the vehicle behind the rear bumper fascia on the passenger's side using the double-sided tape provided. The epoxy side of the module must be pointed toward the ground to prevent water buildup. Ensure the mounting surface is clean and suitable for the adhesive.
Always wear safety glasses during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle and personal injury. Do not drill into exposed surfaces. When routing wires through grommets or along the exterior, avoid hot pipes, heat shields, the fuel tank, and any other points that may pinch or break the wire. Do not break trim panel mounting tabs or connector locking tabs. Read and follow all warnings printed on the vehicle's battery. Do not exceed the stated product ratings or the towing manufacturer's rating.
When routing wires through a grommet or along the exterior of the vehicle, carefully avoid hot pipes, heat shields, the fuel tank, and any other points that may pinch or break the wire. Do not route wires where they can be damaged by moving parts or sharp edges. Secure all loose wires and mount the trailer tow harness in an accessible location with a bracket or electrical box after installation.
After installation is complete, test and verify the installation with a test light or by connecting an actual 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-One® Connector to function properly. If the system does not work, check that all wires are properly connected and the 15 amp fuse is installed.
After installation, verify that all trim panels, threshold, storage covers, and floor coverings are reinstalled without pinching or cutting any wires. Ensure all loose wires are secured and the trailer tow harness is mounted in an accessible location with a bracket or electrical box. Confirm that the module's epoxy side is pointed toward the ground. Test the system with a test light or trailer to verify proper function. Check that the 15 amp fuse is installed and the negative battery cable is reconnected.
The manual does not specify any regular maintenance intervals or procedures. However, it recommends optionally applying a small amount of silicone sealant to the floor pan grommet and wire after installation to prevent environmental intrusion. Ensure all connections remain clean and free of dirt, and periodically verify that the module remains securely mounted and that all wires are intact and properly routed.
The manual shows installation on a Hyundai Genesis, but does not specify model years or other vehicles. Check the product listing or contact the manufacturer to confirm fitment for your specific vehicle.
Yes, disconnect the negative (−) battery cable before connecting the power wire to the positive (+) terminal in step 10. Reconnect only after the 15 amp fuse is installed in step 13.
The black power wire connecting the module to the battery is 12 gauge (12 ga.).
Avoid hot pipes, heat shields, fuel tank, and pinch points. Do not route wires where they can be damaged. Secure all loose wires after installation.
Verify that all connections are complete and secure. Check that the 15 amp fuse is installed in the yellow fuse holder. Ensure the negative (−) battery cable is reconnected. Test the system with a test light or trailer. Reset the vehicle's electrical system by temporarily removing the key from the ignition. Verify that all connector surfaces are clean and free of dirt, and that the yellow and green wires are properly locked into the vehicle's tail light connectors.
The module is mounted with the epoxy side pointing upward instead of toward the ground. Remount the module so that the epoxy side is pointed toward the ground to prevent water buildup. Use the double-sided tape provided to secure the module in the correct orientation underneath the vehicle behind the rear bumper fascia on the passenger's side.
2 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2022 - 2024 | Genesis GV70 | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2021 - 2024 | Genesis GV80 | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
Ann
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
