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2017 - 2025 Kia Niro
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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: | 118749 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 2 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 |
|---|---|---|
| 2017 - 2025 | Kia Niro | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
The T-Connector is a T-One® T-Connector designed for the Kia Niro that integrates the vehicle's taillight wiring with a trailer connector system. It allows you to connect a trailer to your vehicle by tapping into the existing taillight wiring harness on both the driver and passenger sides, routing the signals through a black box-module, and connecting power through the vehicle's battery via a 15 amp fuse.
Yes, the T-Connector (part 118749-037) is designed specifically for the Kia Niro. The manual provides installation instructions tailored to this vehicle's taillight wiring harness location and battery configuration.
You will need: trim panel remover, 10 mm socket and ratchet or 10 mm wrench, drill with 3/32" drill bit, 1/4" socket, wire crimpers, wire cutters, Phillips head screwdriver, and a test-probe.
The T-Connector includes: a yellow fuse holder with a 15 amp fuse, a yellow butt connector, a white eyelet and screw for grounding, cable ties for securing the harness, and a 4-flat connector for storage in the rear cargo area when not in use. The kit also includes a black 12 gauge power wire that you attach to the vehicle's battery.
Yes. You must disconnect the vehicle's negative (-) battery cable before connecting the power wire to the battery. This is done in step 7, after routing the black 12 gauge power wire to the engine compartment. The negative cable is reconnected in step 8 after the fuse holder is installed.
The taillight wiring harness is located inside the access panel area on both the driver and passenger sides of the vehicle. You access it by opening the tailgate, removing the cargo door on the floor, and carefully removing the floor trim panels and access panels on each side.
On the driver's side, insert the T-Connector end with the yellow wire between the vehicle's taillight wiring connectors and lock it into place, being careful not to damage the locking tabs. Route the T-Connector end with the green wire through the trim panel access hole, across the threshold, and through the passenger trim panel access hole. On the passenger's side, repeat the process using the T-Connector harness end with the green wire. Ensure all connectors are fully inserted with locking tabs in place.
Yes. You must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. The hole should be drilled in a suitable grounding point near the connector, such as the vehicle's frame or crossmember. You must not drill into the vehicle floor or bed, and you must verify what is behind any surface before drilling to avoid damage to the vehicle or personal injury.
You need a 3/32" drill bit to create the hole for securing the white ground wire with the eyelet and screw provided.
Locate a suitable grounding point near the connector, such as the vehicle's frame or crossmember. Do not drill into the vehicle floor or bed. Clean dirt and rustproofing from the area before drilling the 3/32" hole.
The T-Connector uses a 15 amp fuse. This fuse is installed in the yellow fuse holder provided with the kit and is placed in step 8 after the negative battery cable is reconnected.
The power wire is 12 gauge (12 ga.). This black wire is routed from the T-Connector box to the vehicle's positive battery terminal and is protected by the 15 amp fuse.
The T-Connector uses three wire colors: yellow wire (inserted into the driver's side taillight connector), green wire (routed across the vehicle between driver and passenger trim panels and inserted into the passenger's side taillight connector), and white wire (ground wire secured to the vehicle's frame or crossmember with an eyelet and screw). The black 12 gauge power wire is attached separately and routed to the vehicle's positive battery terminal.
Route the black 12 gauge power wire along the exterior frame or follow the existing wiring along the thresholds into the engine compartment up to the battery. Avoid areas that may pinch or break the wire. If routing through a grommet and along the exterior of the vehicle, be careful to avoid hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire.
After routing the black 12 gauge power wire to the engine compartment, disconnect the vehicle's negative (-) battery cable. Remove the fuse from the yellow fuse holder if not already removed. 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 gauge wire using the yellow butt connector provided. Finally, reconnect the negative battery cable and install the 15 amp fuse into the fuse holder.
The yellow butt connector is used to connect the fuse holder to the black 12 gauge power wire. This connection is made in step 7 after the ring terminal is attached to the positive battery cable.
Mount the T-Connector's black box-module on a flat surface in an out-of-the-way place to prevent damage or rattling. The manual does not specify an exact location, but it should be secure and protected from impact.
Secure the remainder of the T-Connector harness with the cable ties provided to prevent damage or rattling. Be careful to avoid any areas that would pinch, cut, or melt 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 the vehicle floor, bed, or any exposed surfaces. When routing the power wire, avoid hot pipes, heat shields, the fuel tank, and any points that may pinch or break the wire. Read and follow all warnings and cautions printed on the vehicle's battery. Do not exceed the stated product ratings or the towing manufacturer rating.
All connections must be complete for the T-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.
The T-Connector uses a 15 amp fuse. Do not exceed the lower of the towing manufacturer 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-Connector (part 118749-037) is designed specifically for the Kia Niro.
The T-Connector uses a 15 amp fuse installed in the yellow fuse holder provided.
Do not exceed the lower of the towing manufacturer rating or the specific amperage ratings stated on the product. The fuse is 15 amp. Overloading circuits can cause fires.
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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
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