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Tekonsha
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2010 - 2011 Mitsubishi Lancer
Confirmed to Fit
2011 - 2014 Mitsubishi Lancer
Confirmed to Fit
2012 - 2017 Mitsubishi Lancer
Confirmed to Fit
2011 - 2019 Mitsubishi Outlander Sport
Confirmed to Fit
2011 - 2025 Mitsubishi RVR
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: | 118538 |
| 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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5 compatible vehicles
| Year | Make & Model | Style | Notes |
|---|---|---|---|
| 2010 - 2011 | Mitsubishi Lancer | — | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2011 - 2014 | Mitsubishi Lancer | Hatchback | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2012 - 2017 | Mitsubishi Lancer | Sedan · 4-Door | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2011 - 2019 | Mitsubishi Outlander Sport | — | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
| 2011 - 2025 | Mitsubishi RVR | — | Tow Harness T: Connector Assembly Drilling Required Install Time is 60 minutes |
Yes, the Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite Module TK118538 (Part #TK118538) is designed to fit the 2010-2017 Mitsubishi Lancer.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite Module TK118538 (Part #TK118538) fits the following vehicles: 2010-2017 Mitsubishi Lancer; 2011-2019 Mitsubishi Outlander Sport; 2011-2025 Mitsubishi RVR. Always verify your specific year, make, and model before ordering.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite Module TK118538 (Part #TK118538) fits 2010-2017 Mitsubishi Lancer models. The 2025 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 Module TK118538 (Part #TK118538) Drilling is required for installation. Basic hand tools are typically all you need.
The T-Connector is a wiring harness that integrates with your Mitsubishi Outlander Sport's taillight system to provide trailer lighting connections. It intercepts the vehicle's taillight wiring and routes power to a 4-flat connector for trailer use. The system includes a fused power supply connected to the vehicle battery.
Yes, the T-Connector part 118538-037 is designed for the Mitsubishi Outlander Sport. The installation instructions are specific to this vehicle model.
Required tools are: trim panel remover, 10mm socket and ratchet or 10mm wrench, drill with 3/32" drill bit, 1/4" socket, wire crimpers, wire cutters, Phillips head screwdriver, and test probe.
The T-Connector kit includes: T-Connector box with yellow and green wire ends, red 12 ga. power wire, black 12 ga. wire, white ground wire with eyelet, yellow fuse holder with 10 amp fuse, yellow butt connector, mounting screw for ground eyelet, and cable ties for securing the harness.
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 9 before attaching the fuse holder ring terminal to the positive cable. Reconnect the negative cable in step 10 after the fuse holder is installed.
You must remove: both taillights (driver and passenger side), grommets on both sides, all floor coverings and cargo trays from the rear cargo area, and partially remove the rear interior trim panels on both sides. Set all removed items aside carefully to avoid damage.
Locate the vehicle's taillight wiring harness connectors on both driver and passenger sides. These connectors match the ends of the T-Connector. Separate the vehicle's connectors carefully without breaking the locking tabs. Ensure all connector surfaces are clean and free of dirt. Insert the T-Connector ends (yellow wire on driver's side, green wire on passenger's side) between the vehicle wiring connectors and lock into place, ensuring locking tabs are fully seated.
Route the T-Connector end with yellow and brown wires through the grommet on the driver's side from the cargo compartment. Route the green wire end to the passenger's side behind the panels and along the threshold. The black 12 ga. power wire should be routed through the taillight socket opening and behind the bumper, then along the exterior frame or following existing wiring along thresholds into the engine compartment up to the battery, avoiding areas that may pinch or break the wire.
Yes. You must drill one 3/32" hole on the driver's side near the connectors to secure the white ground wire with an eyelet using the 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.
Drill a 3/32" hole on the driver's side near the connectors to secure the white ground wire with the eyelet and screw provided.
The T-Connector uses a 10 amp fuse. This fuse is installed in the yellow fuse holder that connects the power wire from the T-Connector box to the vehicle's positive battery cable.
The power wire from the T-Connector box is red 12 ga. (gauge). The black wire provided for connection is also 12 ga. The white ground wire is provided with an eyelet for secure connection.
The T-Connector has: yellow wire (driver's side taillight connection), green wire (passenger's side taillight connection), brown wire (routed with yellow wire), red 12 ga. power wire (from T-Connector box to fuse holder), black 12 ga. wire (from fuse holder to vehicle battery positive terminal), and white wire (ground connection to vehicle frame).
The red 12 ga. power wire from the T-Connector box is connected to a black 12 ga. wire provided in the kit. This black wire is routed through the engine compartment to the vehicle's positive (+) battery cable. A ring terminal is attached to the black wire and secured to the positive battery cable. A yellow fuse holder with a 10 amp fuse is installed between the black wire and the positive battery connection using a yellow butt connector.
The white ground wire is secured to a suitable grounding point on the driver's side near the connectors using an eyelet and screw provided. A 3/32" hole is drilled at the grounding location, and the eyelet is fastened with the provided screw.
Always wear safety glasses during installation. Before drilling, verify what is behind any surface to avoid damage to the vehicle and personal injury. Do not drill into exposed surfaces. Be careful not to damage locking tabs when connecting the T-Connector to the vehicle's taillight harness. Avoid routing wires through areas that may pinch, cut, or melt the wire. 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. Read and follow all warnings printed on the vehicle battery.
All connections must be complete for the T-Connector to function properly. Test and verify installation with a test light or trailer once installed. For the initial test, reset the vehicle electrical system by temporarily removing the key from the ignition.
Secure the remainder of the T-Connector harness with the cable ties provided to prevent damage or rattling, being careful to avoid areas that would pinch, cut, or melt the wire. Reinstall all plastic trim panels, threshold, cargo trays, and taillamps that were removed during installation, being careful not to pinch or cut the wires. Store the 4-flat connector in the rear cargo area when not in use.
Do not exceed the lower of: the towing manufacturer rating stated in your vehicle owner's manual, or the specific amperage ratings stated on the T-Connector product. Overloading circuits can cause fires. Refer to your vehicle owner's manual and the product documentation for the specific amperage rating.
Yes, part 118538-037 is designed specifically for the Mitsubishi Outlander Sport.
You need: trim panel remover, 10mm socket/ratchet or wrench, 3/32" drill bit, 1/4" socket, wire crimpers, wire cutters, Phillips screwdriver, and test probe.
Yes, you must disconnect the negative battery cable before connecting the power wire to the positive terminal in step 9, then reconnect it in step 10 after the fuse holder is installed.
The T-Connector uses a 10 amp fuse installed in the yellow fuse holder provided.
Do not exceed the lower of the towing manufacturer rating or the product's amperage rating. Overloading circuits can cause fires. Always wear safety glasses during installation.
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May 22, 2023
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