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Tekonsha
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2011 - 2013 Ford Fiesta
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2006 - 2012 Ford Fusion
Confirmed to Fit

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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: | 118422 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 1 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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2 compatible vehicles
| Year | Make & Model | Style | Notes |
|---|---|---|---|
| 2011 - 2013 | Ford Fiesta | Sedan · 4-Door | Tow Harness T: Connector Assembly Drilling Required Install Time is 30 minutes |
| 2006 - 2012 | Ford Fusion | — | Tow Harness T: Connector Assembly Drilling Required Install Time is 30 minutes |
Yes, the 2006-2009 Ford Fusion, 2010-2012 Ford Fusion, 2011-2013 Ford Fiesta Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118422 (Part #TK118422) is designed to fit the 2011-2013 Ford Fiesta.
The 2006-2009 Ford Fusion, 2010-2012 Ford Fusion, 2011-2013 Ford Fiesta Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118422 (Part #TK118422) fits 2011-2013 Ford Fiesta models. The 2013 model year is the last year covered by this part number. For newer models, check for an updated version.
The 2006-2009 Ford Fusion, 2010-2012 Ford Fusion, 2011-2013 Ford Fiesta Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118422 (Part #TK118422) fits the following vehicles: 2011-2013 Ford Fiesta; 2006-2012 Ford Fusion. Always verify your specific year, make, and model before ordering.
The 2006-2009 Ford Fusion, 2010-2012 Ford Fusion, 2011-2013 Ford Fiesta Tekonsha Plug & Play T-Connector Adapter Trailer Wiring 118422 (Part #TK118422) Drilling is required for installation. Basic hand tools are typically all you need.
The T-Connector is a trailer wiring adapter that connects between your vehicle's taillight connectors and a trailer. It allows you to connect a trailer's electrical system to your vehicle's lighting circuits without permanently modifying the vehicle's wiring. The adapter includes a black box that mounts in the trunk and routes power from the battery through a fused connection to the trailer lights.
The manual does not specify which vehicle makes, models, or years are compatible with this T-Connector. Contact the manufacturer or your retailer with your vehicle's year, make, and model to confirm fitment before purchasing.
No. The T-Connector requires a vehicle with a rear cargo area that has accessible taillight housings with connection points matching the T-Connector adapter ends. The vehicle's wiring must be located inside the rear cargo area and accessible by partially removing the plastic threshold cover and felt trunk liner. Not all vehicles meet these requirements.
You will need: a drill with a 3/32" drill bit, a Phillips head screwdriver, a 10mm socket and ratchet (or 10mm wrench), wire crimpers, and wire cutters. These are the minimum tools required to complete the installation.
The T-Connector package includes: the T-Connector adapter with yellow, red, and green wires; a black box; yellow butt connectors; a white wire with eyelet and screw for grounding; a yellow fuse holder with a 10 amp fuse; cable ties; double-sided tape; and a 4-flat connector for storage in the rear cargo area when not in use.
Yes. You must disconnect the vehicle's negative (−) battery cable before connecting the fuse holder to the positive (+) battery cable in step 8. After all connections are complete, you reconnect the negative battery cable and install the 10 amp fuse into the fuse holder.
The manual does not specify whether professional installation is required or recommended. However, the installation involves battery disconnection, drilling, wire routing, and electrical connections. If you are not comfortable working with vehicle electrical systems or drilling into your vehicle, consult a professional installer.
1. Locate the vehicle wiring inside the rear cargo area by partially removing the plastic threshold cover and felt trunk liner. 2. Separate the vehicle's taillight connectors. 3. Insert the T-Connector between the separated connectors, ensuring the mating surfaces match and connectors are fully inserted with locking tabs in place. 4. On the driver's side, attach the T-Connector ends with yellow and red wires. 5. Route the T-Connector with the green wire below the threshold cover to the passenger's side taillight housing and repeat the connection process.
Before inserting the T-Connector, verify that the mating surfaces of your vehicle's wiring connectors match the T-Connector ends. All connector surfaces must be clean and free of dirt. Be careful not to damage the locking tabs during insertion, and ensure that connectors are fully inserted with locking tabs in place.
Yes. You must drill a 3/32" hole to secure the white grounding 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 cross member. You must not drill into the vehicle floor or bed.
Drill the 3/32" hole at a suitable grounding point near the connector, such as the vehicle's frame or cross member. Do not drill into the vehicle floor or bed. Before drilling, clean dirt and rustproofing from the area. Always verify what is behind any surface before drilling to avoid damage to the vehicle and personal injury.
You need a 3/32" drill bit to create the hole for the white grounding wire eyelet and screw.
The T-Connector includes: yellow and red wires that connect to the driver's side taillight housing; a green wire that connects to the passenger's side taillight housing; a black 12 gauge wire that routes to the vehicle's battery; and a white wire that grounds to the vehicle's frame or cross member. Inside the trunk, the black and red wires are connected together using a yellow butt connector.
From inside the trunk, connect the black 12 gauge wire and the red wire from the T-Connector black box together using the supplied yellow butt connector.
Route the black wire from inside the trunk into the engine compartment and up to the battery. Take care to avoid any hot pipes, heat shields, the fuel tank, or any other points that may pinch or break the wire.
The T-Connector uses a 10 amp fuse. The fuse holder connects between the black 12 gauge wire and the vehicle's positive (+) battery cable. The ring terminal of the fuse holder is secured to the positive battery cable, and the other end of the fuse holder connects to the black wire using a yellow butt connector. The fuse is installed after all other connections are complete.
1. Disconnect the vehicle's negative (−) battery cable. 2. Remove the fuse from the yellow fuse holder if present. 3. Cut the fuse holder wire. 4. Attach the ring terminal to the vehicle's positive (+) battery cable and secure it. 5. Connect the other end of the fuse holder to the black 12 gauge wire using the yellow butt connector. 6. Reconnect the negative battery cable. 7. Install the 10 amp fuse into the fuse holder.
Locate a suitable grounding point near the connector, such as the vehicle's frame or cross member. Clean dirt and rustproofing from the area. Drill a 3/32" hole and secure the white wire using the eyelet and screw provided. Do not drill into the vehicle floor or bed.
Do not exceed the lower of your towing manufacturer's rating or these limits: maximum 1 stop/turn light per side at 2.1 amps, and maximum tail lights at 4.2 amps. Overloading the circuit can cause fires. Consult your vehicle's owner's manual and instruction sheet for additional information.
Wear safety glasses during installation. Verify what is behind any surface before drilling to avoid damage to the vehicle and personal injury. Do not drill into exposed surfaces or the vehicle floor or bed. Route the black wire carefully to avoid hot pipes, heat shields, the fuel tank, or any points that may pinch or break the wire. Ensure all connections are complete before testing the T-Connector.
After installation is complete, test and verify the T-Connector with a test light or by connecting a trailer. All connections must be complete for the T-Connector to function properly. If the lights do not work, check that all connectors are fully inserted with locking tabs in place, all wire connections are secure, and the 10 amp fuse is installed.
Secure the remainder of the T-Connector harness with the cable ties provided to prevent damage or rattling. Take care to avoid any areas that would cut or pinch the wire. Mount the T-Connector black box on the driver's side floor of the rear cargo area using the double-sided tape provided. First clean a flat area using a mixture of rubbing alcohol and water.
Store the 4-flat connector in the rear cargo area (trunk or cargo bed) when the T-Connector is not in use.
The T-Connector fits vehicles with a rear cargo area and accessible taillight housings with connection points matching the adapter. Confirm compatibility with the manufacturer or retailer using your vehicle's year, make, and model before purchasing.
You need a drill with 3/32" bit, Phillips head screwdriver, 10mm socket/ratchet or wrench, wire crimpers, and wire cutters.
Yes, disconnect the negative battery cable before connecting the fuse holder to the positive battery cable. Reconnect it after all connections are complete.
The T-Connector uses a 10 amp fuse in the yellow fuse holder that connects between the black wire and the vehicle's positive battery cable.
Do not exceed 1 stop/turn light per side (2.1 amps) or tail lights (4.2 amps), or your towing manufacturer's lower rating. Overloading can cause fires.
Verify the following in order: (1) Ensure the 10 amp fuse is installed in the yellow fuse holder. (2) Check that all T-Connector ends are fully inserted into the taillight connectors with locking tabs in place on both driver's and passenger's sides. (3) Confirm the black and red wires are connected together with a yellow butt connector inside the trunk. (4) Verify the white grounding wire is securely fastened to the vehicle's frame or cross member with the eyelet and screw. (5) Check that the black wire is routed properly to the battery and the ring terminal is securely attached to the positive battery cable. (6) Ensure the fuse holder is properly connected between the black wire and the positive battery cable. If all connections are complete and secure, test with a test light or trailer to verify function.
A repeatedly blown 10 amp fuse indicates an electrical overload or short circuit. Check that: (1) the total electrical load does not exceed 1 stop/turn light per side (2.1 amps) and tail lights (4.2 amps), or your towing manufacturer's lower rating; (2) all wire connections are secure and properly insulated with no exposed copper; (3) the white grounding wire is securely fastened and making good contact with the vehicle's frame; (4) no wires are pinched, cut, or damaged; and (5) the trailer's electrical system is functioning correctly and not drawing excessive current. If the fuse continues to blow after verifying these items, there may be a short circuit in the wiring or trailer system that requires professional diagnosis.



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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