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Tekonsha
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2022 - 2024 Hyundai Ioniq 5
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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: | 118870 |
| 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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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2022 - 2024 | Hyundai Ioniq 5 | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
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The 2022-2023 Hyundai Ioniq 5 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118870 (Part #TK118870) fits 2022-2024 Hyundai Ioniq 5 models. The 2024 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2022-2023 Hyundai Ioniq 5 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118870 (Part #TK118870) fits the following vehicles: 2022-2024 Hyundai Ioniq 5. Always verify your specific year, make, and model before ordering.
Yes, the 2022-2023 Hyundai Ioniq 5 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118870 (Part #TK118870) is designed to fit the 2022-2024 Hyundai Ioniq 5.
The 2022-2023 Hyundai Ioniq 5 Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118870 (Part #TK118870) Drilling is required for installation. Basic hand tools are typically all you need.
The T-One® Connector is a trailer wiring harness that integrates with your vehicle's factory taillight wiring. It provides a 4-flat connector for trailer lights and is designed to work with your vehicle's existing electrical system without cutting or splicing factory wires.
Yes, the T-One® Connector (part number 118870-037) is designed for the Hyundai Ioniq 5. The manual provides installation instructions specific to this vehicle.
You will need: trim panel remover, Phillips head screwdriver, 10 mm socket or wrench, drill with 3/32" drill bit, wire crimpers, wire cutters, and a test probe. Safety glasses are also required.
The kit includes: double-sided tape for mounting the black box, cable ties for securing the harness, an eyelet and screw for the ground wire, a yellow fuse holder with a 15 amp fuse, yellow butt connectors for wire connections, and a ring terminal for the battery connection.
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 14. The negative cable is reconnected in Step 15 after the fuse is installed.
You must remove: the rear hatch, both rear seats (folded down), floor covering in the cargo area, black felt cargo liner, threshold plate, lower Phillips head screws from both driver's and passenger's side trim panels, and the retaining screw from behind the rear seat latch release lever on both sides. These are reinstalled at the end of installation.
On the driver's side, locate the taillight wiring connector, disconnect the vehicle's factory connector, and insert the T-One® Connector end with the yellow wire between the mating vehicle connectors. Lock it into place, ensuring the locking tabs are fully engaged. Repeat on the passenger's side with the green wire connector. Do not damage the locking tabs during insertion.
Mount the black box on the driver's side using the double-sided tape provided. Secure the remainder of the harness with the cable ties provided, routing it carefully to avoid areas that would cut or pinch the wire.
Starting on the driver's side in the rear cargo area, route the black 12 ga. wire forward through the interior of the vehicle, behind the driver's side rear trim panels, sill plate, side panels, and up under the driver's side of the dashboard. Locate an existing grommet in the firewall under the dashboard, carefully slit it, and route the wire into the front trunk compartment.
Yes, you must drill a 3/32" hole to secure the white ground wire. This hole is drilled near the black box at a suitable grounding point, such as an existing ground stud. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces.
Yes, you must carefully slit the existing grommet in the firewall under the dashboard to route the black 12 ga. power wire from the interior to the engine bay. You may also need to cut the fuse holder wire if the fuse is not already removed from the yellow fuse holder.
The T-One® Connector uses a 15 amp fuse. This fuse is installed in the yellow fuse holder provided in the hardware kit and is connected to the positive battery terminal.
The black power wire is 12 gauge (12 ga.). The ground wire hole is drilled to 3/32" diameter.
The T-One® Connector has three main wires: yellow (driver's side taillight connector), green (passenger's side taillight connector), and white (ground wire). The black 12 ga. power wire connects to the black power wire on the black box and ultimately to the vehicle's positive battery terminal via a 15 amp fuse.
In the cargo area, connect the end of the black 12 ga. wire to the black power wire located on the T-Connector's black box using the yellow butt connector provided in the hardware kit.
Disconnect the vehicle's negative (−) battery cable. If not already removed, remove the fuse from the yellow fuse holder. Cut the fuse holder wire, attach the ring terminal, and secure it to the vehicle's positive (+) battery cable. Connect the other end of the fuse holder to the black 12 ga. wire using the yellow butt connector provided. Reconnect the negative battery cable and install the 15 amp fuse into the fuse holder.
Locate a suitable grounding point near the black box, such as an existing ground stud, or drill a 3/32" hole. Secure the white wire using the eyelet and screw provided. Clean dirt and rustproofing from the area before securing the ground connection.
Always wear safety glasses during installation. Read and follow all warnings and cautions printed on the tow vehicle's battery. Verify what is behind any surface before drilling to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces. When routing the wire, avoid hot pipes, heat shields, fuel tank, and other points that may pinch or break the wire. Do not exceed the product's stated amperage ratings or the towing manufacturer's rating, as overloading circuits can cause fires.
All connections must be complete for the T-One® Connector to function properly. Test and verify the installation with a test light or trailer once installed. For the initial test, reset the vehicle's electrical system by temporarily removing the key from the ignition.
Store the 4-flat connector in the rear cargo area when not in use.
Do not exceed the lower of the towing manufacturer's rating (including in your vehicle owner's manual) or the specific amperage ratings stated on the product. Overloading circuits can cause fires.
Yes, the T-One® Connector (118870-037) is designed for the Hyundai Ioniq 5.
Trim panel remover, Phillips screwdriver, 10 mm socket/wrench, 3/32" drill bit, wire crimpers, wire cutters, test probe, and safety glasses.
Yes, disconnect the negative battery cable before connecting to the positive terminal. Reconnect it after installing the 15 amp fuse.
Yes, you must drill a 3/32" hole for the ground wire near the black box. Verify what is behind the surface before drilling to avoid damage.
15 amp fuse, installed in the yellow fuse holder provided.
Yellow (driver's taillight), green (passenger's taillight), white (ground), and black 12 ga. (power).
Do not exceed the lower of the towing manufacturer's rating or the specific amperage ratings stated on the product.
Test with a test light or trailer. Reset the vehicle's electrical system by temporarily removing the ignition key.
Total for 3 items:
$75.95
Matt
The staff was able to quickly assist me with locating the correct product I needed. Shipping was really fast. Item arrived in 2 days. Will be using TowUniverse again!!
May 22, 2023
