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2021 - 2025 Kia Sorento
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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: | 118838 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.65 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 |
|---|---|---|
| 2021 - 2025 | Kia Sorento | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The 2021-2023 KIA Sorento Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118838 (Part #TK118838) fits 2021-2025 Kia Sorento models. The 2025 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the 2021-2023 KIA Sorento Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118838 (Part #TK118838) is designed to fit the 2021-2025 Kia Sorento.
The 2021-2023 KIA Sorento Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118838 (Part #TK118838) fits the following vehicles: 2021-2025 Kia Sorento. Always verify your specific year, make, and model before ordering.
The 2021-2023 KIA Sorento Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118838 (Part #TK118838) Drilling is required for installation. Basic hand tools are typically all you need.
The T-One® Connector is a trailer wiring harness for the Kia Sorento. It provides electrical connections between the vehicle and a trailer by tapping into the vehicle's tail light circuits (driver's side yellow wire and passenger's side green wire) and adding a dedicated 12-gauge power wire connected to the vehicle's battery through a 15 amp fuse.
Yes, the T-One® Connector (part number 118838-037) is designed for the Kia Sorento. The manual provides specific installation instructions for this vehicle, including tail light removal, harness routing, and connector insertion points.
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. These tools are required to remove tail lights, access the frame rail, drill the ground hole, and test the installation.
The kit includes: double-sided tape for mounting the black box module, cable ties for securing the harness, an eyelet and screw for the white ground wire, a yellow fuse holder with a 15 amp fuse, two yellow butt connectors for wire connections, and a ring terminal for the positive battery connection.
Yes. Step 9 requires you to disconnect the vehicle's negative (−) battery cable before making any power connections. After routing the black 12-gauge power wire and connecting it to the fuse holder and black box, you reconnect the negative battery cable and install the 15 amp fuse.
Open the rear hatch and remove both the driver's and passenger's side tail lights using a 10 mm socket and ratchet. Set them aside carefully to avoid damaging the alignment pins.
The yellow wire is inserted on the driver's side. Insert the T-One® Connector end with the yellow wire between the vehicle's wiring connectors and lock it into place. Be careful not to damage the locking tabs and ensure the connectors are fully inserted with locking tabs engaged.
The green wire is inserted on the passenger's side. Insert the T-One® Connector end with the green wire between the vehicle's wiring connectors and lock it into place. Be careful not to damage the locking tabs and ensure the connectors are fully inserted with locking tabs engaged.
Mount the black box on the driver's side using the double-sided tape provided. The epoxy side of the module must point toward the ground to prevent water buildup. Secure the remainder of the harness with the cable ties provided, being careful to avoid areas that would cut or pinch the wire.
Yes, drilling is required to create a ground connection. You must locate a suitable grounding point near the connector, such as an existing ground stud, or drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. Do not drill into the vehicle floor or bed. Before drilling, verify what is behind any surface to avoid damage to the vehicle or personal injury.
Use a 3/32" drill bit to create the ground hole for the white wire eyelet. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury, and do not drill into the vehicle floor or bed.
After disconnecting the negative battery cable, cut the fuse holder wire and attach the ring terminal to the vehicle's positive (+) battery cable. Connect the other end of the fuse holder to the black 12-gauge wire using the yellow butt connector provided. Then route the black 12-gauge wire from the front of the vehicle rearward along the frame rail to the black box module's black power wire, connecting it with another yellow butt connector. Finally, reconnect the negative battery cable and install the 15 amp fuse into the fuse holder.
The T-One® Connector uses a 15 amp fuse. This fuse is installed in the yellow fuse holder provided in the kit and must be installed after all connections are complete and the negative battery cable is reconnected.
The T-One® Connector harness contains: a yellow wire (driver's side tail light circuit), a green wire (passenger's side tail light circuit), a white wire (ground), and a black 12-gauge wire (power from the battery). The kit also includes a yellow fuse holder and yellow butt connectors for wire connections.
Beginning from the front of the vehicle, route the black 12-gauge wire rearward along the frame rail. Avoid any hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire. Connect the rear end to the black power wire on the T-One® black box using the yellow butt connector provided.
Route the harness containing the yellow wire underneath the vehicle and up through the opening between the vehicle bumper and body to the driver's side taillight pocket. Similarly, route the harness containing the green wire underneath the vehicle and up through the opening between the vehicle bumper and body to the passenger's side taillight pocket. If routing through a grommet and along the exterior, avoid hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire.
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, the vehicle floor, or bed. When routing wires, avoid hot pipes, heat shields, the fuel tank, and any other points that may pinch or break the wire. Be careful not to damage the connector locking tabs when inserting connectors. Secure all loose wires to prevent damage or rattling. Do not exceed the towing manufacturing rating or product amperage ratings, as overloading circuits can cause fires.
After all connections are complete, test and verify the installation with a test light or trailer. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition. All connections must be complete for the T-One® Connector to function properly. Refer to your vehicle's owner's manual and the instruction sheet for additional information.
Reinstall all plastic trim panels, threshold, storage covers, floor covering, and other items that were removed during installation, being careful not to pinch or cut the wires. Secure all loose wires and mount the trailer tow harness in an accessible location with a bracket or electrical box. Test and verify the installation with a test light or trailer before towing.
Do not exceed the lower of the towing manufacturing rating (including the rating in your vehicle owner's manual) or the specific amperage ratings stated on the product. The manual does not specify the exact amperage rating of the T-One® Connector itself; refer to the product label and your vehicle's owner's manual for this information.
Yes, the T-One® Connector (part 118838-037) is designed for the Kia Sorento and includes specific instructions for tail light removal, harness routing, and connector insertion.
Yes, disconnect the negative battery cable before making power connections. Reconnect it after routing the black 12-gauge power wire and installing the 15 amp fuse.
The T-One® Connector uses a 15 amp fuse, installed in the yellow fuse holder provided after all connections are complete.
Test with a test light or trailer after all connections are complete. Reset the vehicle electrical system by temporarily removing the ignition key. All connections must be complete for proper function.
Verify that all connections are complete and secure. Check that: (1) the yellow wire connector is fully inserted and locked on the driver's side, (2) the green wire connector is fully inserted and locked on the passenger's side, (3) the white ground wire is securely attached to a ground point, (4) the black 12-gauge power wire is connected to both the fuse holder and the black box using yellow butt connectors, (5) the 15 amp fuse is installed in the fuse holder, and (6) the negative battery cable is reconnected. Reset the vehicle electrical system by temporarily removing the ignition key. Test with a test light or trailer to verify function.
The black box module is mounted with the epoxy side pointing upward instead of toward the ground. The epoxy side must point toward the ground to prevent water buildup. Remount the black box using the double-sided tape provided, ensuring the epoxy side faces downward.
Ensure you are inserting the T-One® Connector ends fully between the vehicle's wiring connectors. The connectors must be fully inserted with the locking tabs engaged. Be careful not to damage the locking tabs during insertion. If the locking tabs are damaged, the connectors may not lock properly and the installation will not function correctly.
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George
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
