Tekonsha T-One T-Connector Custom Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module 118887Tekonsha$97.28In Stock
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2022 - 2023 Hyundai Kona
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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: | 118855 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.75 LBS |
| UNIVERSAL OR SPECIFIC FIT: | SPECIFIC |
| CIRCUIT PROTECTED: | YES |
| HARNESS TYPE: | MALE FEMALE |
| TERMINAL QUANTITY: | 4 |
| WIRE COLORS: | BROWN, GREEN, WHITE, YELLOW |
| WIRE QUANTITY: | 4 |
| WIRE GAUGE: | 18 AWG, .85 AVSS |
| 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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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2022 - 2023 | Hyundai Kona | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The Tekonsha T-One T-Connector Custom Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module 118855 (Part #TK118855) fits 2022-2023 Hyundai Kona models. The 2023 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 Custom Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module 118855 (Part #TK118855) fits the following vehicles: 2022-2023 Hyundai Kona. Always verify your specific year, make, and model before ordering.
Yes, the Tekonsha T-One T-Connector Custom Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module 118855 (Part #TK118855) is designed to fit the 2022-2023 Hyundai Kona.
The Tekonsha T-One T-Connector Custom Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module 118855 (Part #TK118855) Drilling is required for installation. Basic hand tools are typically all you need.
Part number 118855 is designed for Hyundai Kona. However, the manual states that specific model years and trim levels must be verified on the Horizon Global website at www.horizonglobal.com for the most up-to-date compatibility information.
Required tools: safety glasses, Phillips screwdriver, wire stripper, wire crimper, 10 mm socket, ratchet, drill with 3/32" drill bit, fish wire, and a heat gun (for heat-shrink butt connectors). A test light is also provided for verification. You will also need silicone rubber sealant (not included) to seal the grommet.
Yes. You must locate the vehicle's battery, disconnect and isolate the negative battery cable before beginning installation. The negative cable is disconnected again in step 11 before connecting the power wire to the positive battery terminal.
Yes. You must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. The manual states: do not drill into the vehicle floor or bed, and verify what is behind any surface prior to drilling to avoid damage to the vehicle and personal injury.
The fuse rating is 15 amps. A 15-amp fuse is provided in the hardware kit and must be installed in the fuse holder after the negative battery cable is reconnected.
After installation, test and verify the connector 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. Do not exceed the towing manufacturing rating or specific amperage ratings stated on the product.
Clean the 4-way flat connector after each use. Before each trip, inspect the 4-way flat harness to ensure no damage to terminals and connection points. Ensure the harness does not get pinched in door latches, trailer connection points, or contact the road surface. Clean the connection and add dielectric grease (sold separately) to the terminal pins.
The T-One® Connector (part number 118855) is a trailer lighting module designed for Hyundai Kona vehicles. It provides a 4-way flat connector for trailer lighting and is installed by connecting to the vehicle's taillight wiring harness and battery. The module includes a black box that mounts behind the rear bumper fascia.
Yes, but with a critical restriction: if your vehicle is equipped with the Start/Stop option, you must connect the module only to the main vehicle battery. Do not connect the module power wire to the support battery. Failure to connect to the vehicle main battery may result in damage.
The installation difficulty is rated as Expert. Installation times are listed on Horizon Global websites or in downloadable application guides. The difficulty level is based on time and effort involved and may vary depending on installer expertise, vehicle condition, and availability of proper tools and equipment.
Mount the black box behind the rear bumper fascia on the driver's side, from inside the cargo area. Use the double-sided tape provided. Before mounting, clean the flat mount surface area using a 50-50 mixture of rubbing alcohol and water. The mounting point should be behind the partially removed trim panel close to the grommet.
The connector has four ends with different colored wires: brown and red wires connect to the driver's side taillight, yellow wire connects to the driver's side taillight in the bumper, and green wire connects to the passenger's side taillight in the bumper. Insert each T-One® Connector end between the vehicle and taillight connectors. Ensure all connector surfaces are clean and free of dirt before insertion.
Locate the grommet underneath the exposed area on the driver's side. Carefully slit the grommet so that both the yellow and green wires and the T-One® Connector ends pass through it to the other side of the vehicle's body. When routing wires through a grommet and along the exterior, avoid hot pipes, heat shields, the fuel tank, and other points that may pinch or break the wire. After installation, seal the slit grommet with silicone rubber (not included) to prevent moisture or dirt from entering the vehicle.
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 heat-shrinkable butt connector provided. Route the black 12 gauge wire from the front of the vehicle rearward along the frame rail, avoiding hot pipes, heat shields, fuel tank, and pinch points. Connect the other end to the black power wire on the T-One® Connector's black box using another yellow heat-shrinkable butt connector. Heat each connector from the center outward until the tubing shrinks and sealant flows, then allow to cool.
1. Disconnect the negative battery cable. 2. Connect the T-One® Connector ends to the taillight connectors (brown/red to driver's side, yellow and green through grommet to bumper taillights). 3. Mount the black box behind the rear bumper fascia. 4. Ground the white wire to a suitable grounding point. 5. Connect the power wire to the positive battery terminal via the fuse holder and black 12 gauge wire. 6. Reconnect the negative battery cable. 7. Install the 15-amp fuse. 8. Test with a test light or trailer. 9. Reset the electrical system by temporarily removing the ignition key.
Locate a suitable grounding point near the black box, such as an existing ground stud. If no existing stud is available, drill a 3/32" hole. Do not drill into the vehicle floor or bed. Clean dirt and rustproofing from the area before drilling. Verify what is behind any surface prior to drilling to avoid damage to the vehicle and personal injury. Do not drill into any exposed surfaces. Secure the white wire using the eyelet and screw provided.
The T-One® Connector uses the following wire colors: brown and red wires connect to the driver's side taillight connector; yellow wire connects to the driver's side taillight in the bumper; green wire connects to the passenger's side taillight in the bumper; white wire is the ground wire that connects to a ground stud or drilled hole; black 12 gauge wire connects to the vehicle's positive battery terminal via the fuse holder; black power wire on the module connects to the black 12 gauge wire.
Two yellow heat-shrinkable butt connectors are provided. Use one to connect the fuse holder wire to the black 12 gauge wire, and use the other to connect the black 12 gauge wire to the black power wire on the T-One® Connector's black box. To apply: heat the connector using a heat gun, starting in the center of the splice connector and heating from the center out to the edges on each end until the tubing shrinks and sealant flows. Allow to cool before inspecting the splice.
Always wear safety glasses during installation. Do not touch the negative battery terminal to the positive battery terminal, as serious injury and damage to the vehicle's electrical system can occur. Read and follow all warnings and cautions printed on the vehicle's battery. Do not exceed the towing manufacturing rating (including in your vehicle owner's manual) or specific amperage ratings stated on the product. Overloading circuits can cause fires. Verify what is behind any surface prior to drilling to avoid damage to the vehicle and personal injury. Do not drill into vehicle floor, bed, or exposed surfaces.
First, ensure all T-One® Connector ends are fully inserted and locked in place. Check that the fuse is fully inserted into the fuse holder with no breaks. Verify the fuse holder is connected properly to the positive post of the battery. Ensure the module is connected to B+ (positive). Using a tester or voltmeter, check for voltage on either side of the yellow butt connector near the module. Remove the module's power fuse for 10 seconds and repeat the test. If the issue persists, check chassis grounds and ensure ring terminals are in full contact with the vehicle chassis.
No power to the 4-way connector can indicate several issues: the fuse may not be fully inserted or may be broken; the fuse holder may not be connected properly to the positive battery post; the module may not be connected to B+; or the installation may have activated circuit protection. To troubleshoot: ensure the fuse is fully inserted with no breaks; verify the fuse holder connection to the positive battery post; check for voltage using a tester or voltmeter on either side of the yellow butt connector near the module; start the vehicle and turn off all functions (tail lights, brake, turns); remove the module power fuse for 10 seconds and repeat the test.
After installation is complete, test and verify the connector 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. A test light is provided in the hardware kit for this purpose.
Open the rear hatch. On the driver's side, use a trim panel tool, Phillips screwdriver, or 10 mm socket to remove the plastic threshold cover, cargo trays, and the side panel. Be careful not to break the mounting tabs. This exposes the vehicle's taillight wiring harness.
Underneath the vehicle on the passenger's side, locate the black environmental cover. Using a trim panel tool, remove the 3 plastic clips carefully to avoid damaging them. Using a 10 mm socket, remove the plastic nut and set the cover aside.
Route the 4-way flat connector through the driver's side panel and threshold into the storage compartment and store it there when not in use.
After reconnecting the negative battery cable, install the 15-amp fuse into the fuse holder. Then 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. Ensure all connections are complete for the T-One® Connector to function properly.
After completing the electrical connections, reinstall any trim panels, cargo trays, threshold covers, and other items that were removed during installation. Be careful not to pinch or cut the wires when reinstalling these components.
Clean the 4-way flat connector after each use. Before each trip, perform a pre-trip inspection of the 4-way flat harness to ensure no damage to terminals and connection points for proper lighting connection and operation. Ensure the harness does not get pinched in door latches, trailer connection points, or contact the road surface. Clean the connection and add dielectric grease (sold separately) to the terminal pins.
The hardware kit includes: Perma Seal heat-shrinkable butt connectors (yellow), ring terminals, #8 screws, a 15-amp fuse, double-sided tape, a fuse holder, a 3/32" drill bit, a 10 mm socket, fish wire, and 6" wire ties. A test light is also provided. Silicone rubber sealant is not included but is required for sealing the grommet.
The black power wire is 12 gauge (12 ga.). This wire connects from the fuse holder to the black power wire on the T-One® Connector's black box using a yellow heat-shrinkable butt connector.
If the installation activates circuit protection, start the vehicle and turn off all functions: tail lights (head lights), brake, and turns. Remove the module power fuse for 10 seconds and repeat the test. This should reset the circuit protection.
First, ensure all T-One® Connector ends are fully inserted and locked in place. Remove the module's power fuse for 10 seconds and repeat the test. If still not functioning, check that the fuse is fully inserted into the fuse holder with no breaks, and verify the fuse holder is connected properly to the positive post of the battery. Check chassis grounds and ensure ring terminals are in full contact with the vehicle chassis.
Possible causes include: the fuse is not fully inserted or is broken; the fuse holder is not connected properly to the positive battery post; the module is not connected to B+ (positive); or the installation has activated circuit protection. To diagnose, verify the fuse is fully inserted with no breaks, check the fuse holder connection, use a tester or voltmeter to check for voltage on either side of the yellow butt connector near the module, and remove the module power fuse for 10 seconds and repeat the test.
Start the vehicle and turn off all functions: tail lights (head lights), brake, and turns. Remove the module power fuse for 10 seconds and repeat the test. This should reset the circuit protection.
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