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Tekonsha
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2010 - 2014 Hyundai Sonata
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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: | 118557 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1.5 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 |
|---|---|---|
| 2010 - 2014 | Hyundai Sonata | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
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Yes, the Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118557 (Part #TK118557) is designed to fit the 2010-2014 Hyundai Sonata.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118557 (Part #TK118557) fits 2010-2014 Hyundai Sonata models. The 2014 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 Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118557 (Part #TK118557) fits the following vehicles: 2010-2014 Hyundai Sonata. Always verify your specific year, make, and model before ordering.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite HD Module TK118557 (Part #TK118557) Drilling is required for installation. Basic hand tools are typically all you need.
The manual confirms this T-Connector is designed for Hyundai Sonata, but does not specify which model years are compatible. Contact the manufacturer or your retailer with your vehicle's year and trim level to confirm fitment before purchasing.
You will need: trim panel remover, drill with 3/32" drill bit, Phillips head screwdriver, and test probe. Safety glasses are also required during installation.
Yes. You must disconnect the vehicle's negative (-) battery cable before connecting any wires to the positive (+) battery terminal. Reconnect the negative cable only after the fuse holder has been properly installed and the 10 amp fuse is in place.
The taillight wiring harness is located on both the driver and passenger sides of the vehicle. You access it by opening the trunk, temporarily removing the rear threshold plate, and partially removing the felt trunk liner behind the taillights.
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. Be careful not to damage the locking tabs and ensure connectors are fully inserted. Route the T-Connector end with the green wire to the passenger side behind the panels and along the threshold, then repeat the process on that side. Ensure all connector surfaces are clean and free of dirt before connecting.
Yes. You must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. Before drilling, verify what is behind the surface to avoid damage to the vehicle or personal injury. Do not drill into any exposed surfaces.
The white wire is the ground wire. It must be secured to a suitable grounding point near the connector using the eyelet and screw provided. The area must be cleaned of dirt and rustproofing before drilling the 3/32" hole.
You have two options: (1) route the black wire through a grommet and along the exterior frame, or (2) follow the existing wiring along the thresholds into the engine compartment up to the battery. Whichever route you choose, avoid areas that may pinch or break the wire. If using the exterior route, avoid hot pipes, heat shields, fuel tank, or other points that may pinch or break the wire.
The T-Connector uses a 10 amp fuse. This fuse must be installed in the yellow fuse holder provided and placed in the fuse holder after the negative battery cable is reconnected.
After disconnecting the negative battery cable, remove the fuse from the yellow fuse holder if present. 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. Reconnect the negative battery cable and install the 10 amp fuse into the fuse holder.
The T-Connector uses the following wire colors: yellow wire (driver side taillight connection), green wire (passenger side taillight connection), white wire (ground), black wire (12 gauge, connects to battery through fuse holder), and red wire (from T-Connector black box, connects to black wire via yellow butt connector).
Do not exceed the lower of two ratings: the towing manufacturer's rating (including the rating in your vehicle owner's manual) or the specific amperage rating stated on the T-Connector product. Overloading circuits can cause fires.
Always wear safety glasses during installation. Read and follow all warnings and cautions printed on the tow vehicle's battery before working with the battery. Verify what is behind any surface before drilling to avoid damage to the vehicle or personal injury. Do not drill into exposed surfaces. If routing wire through a grommet and along the exterior, avoid hot pipes, heat shields, fuel tank, or other points that may pinch or break the wire.
Yes. All connector surfaces must be clean and free of dirt before connecting the T-Connector to the vehicle's taillight wiring harness. This ensures a proper electrical connection.
The manual warns to be careful not to damage the locking tabs when separating and connecting the T-Connector. If the locking tabs are damaged during installation, the connectors may not lock securely. Do not proceed; contact the manufacturer or retailer for a replacement T-Connector.
The T-Connector is designed for Hyundai Sonata. Confirm your specific model year with the manufacturer before purchasing.
Trim panel remover, drill with 3/32" bit, Phillips head screwdriver, test probe, and safety glasses.
Yes. Disconnect the negative battery cable before connecting to the positive terminal. Reconnect only after the fuse holder and 10 amp fuse are installed.
10 amp fuse, installed in the yellow fuse holder provided.
Do not exceed the lower of the towing manufacturer's rating or the specific amperage rating on the product. Overloading can cause fires.
Total for 4 items:
$162.89$169.70
Ann
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May 22, 2023
