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Tekonsha
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Select your vehicle to confirm this part fits.
2007 - 2012 Acura RDX
Confirmed to Fit
2010 - 2011 Honda Accord Crosstour
Confirmed to Fit
2012 Honda Crosstour
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: | 118500 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.8 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: | NO |
| 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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3 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2007 - 2012 | Acura RDX | Tow Harness T: Connector Assembly Uses all existing holes. No Drilling required Install Time is 15 minutes |
| 2010 - 2011 | Honda Accord Crosstour | Tow Harness T: Connector Assembly Uses all existing holes. No Drilling required Install Time is 15 minutes |
| 2012 | Honda Crosstour | Tow Harness T: Connector Assembly Uses all existing holes. No Drilling required Install Time is 15 minutes |
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite Module TK118500 (Part #TK118500) fits 2007-2012 Acura RDX models. The 2012 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 TK118500 (Part #TK118500) fits the following vehicles: 2007-2012 Acura RDX; 2010-2011 Honda Accord Crosstour; 2012 Honda Crosstour. Always verify your specific year, make, and model before ordering.
Yes, the Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite Module TK118500 (Part #TK118500) is designed to fit the 2007-2012 Acura RDX.
The Tekonsha T-One T-Connector Harness, 4-Way Flat, w/Circuit Protected ModuLite Module TK118500 (Part #TK118500) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The T-Connector is a trailer wiring adapter that allows you to connect a trailer to your Honda Crosstour or Acura RDX. It converts the vehicle's factory tow plug into a 4-flat connector for trailer use. The system includes a black converter box that mounts inside the vehicle and a 4-flat connector that can be stored when not in use.
Yes, the T-Connector is designed for Honda Crosstour. The installation process is specific to Crosstour and involves accessing the blue tow plug located under the driver's side trim panel at the rear of the vehicle.
Yes, the T-Connector is designed for Acura RDX. The installation process is specific to RDX and involves accessing the blue 6-pin tow plug located near the foam cargo tray in the spare tire compartment.
The manual does not address this. The T-Connector is designed to connect to the vehicle's existing factory tow plug. Contact the manufacturer or an authorized installer to determine if your vehicle has the required factory tow plug before purchasing.
You will need: a trim panel remover, a 10mm socket and ratchet (or 10mm wrench), and a test-probe. These tools are required to remove trim panels, remove the cargo tray bolt (Crosstour only), and test the installation.
The kit includes the T-Connector harness, a black converter box, a 4-flat connector, a 15 amp fuse, and double-sided tape for mounting the converter box. The manual does not specify whether additional hardware or fasteners are included.
The manual does not specify whether the battery must be disconnected. Consult your vehicle's owner's manual or contact the manufacturer for guidance on electrical safety before beginning installation.
You must open the rear hatch and temporarily remove all floor coverings and the center storage bin. Then locate the driver's side cargo tray bolt by carefully prying open the dust cover, remove the bolt, and pull up and remove the driver's side cargo tray. The blue tow plug will then be visible under the driver's side trim panel.
You must open the rear hatch, temporarily remove all floor coverings to expose the spare tire compartment, and remove the spare tire. The blue 6-pin tow plug will then be visible near the foam cargo tray.
Locate the blue tow plug (which will be taped to the vehicle's electrical harness with blue tape). Insert the T-Connector harness into the vehicle's tow-plug harness and lock it into place. The connection must be complete and secure for the T-Connector to function properly.
Open the hood and locate the fuse box on the driver's side. Open the fuse box and insert the 15 amp fuse provided into the empty location shown in the manual (marked 'i'). The manual does not specify the exact location for RDX vehicles.
On the driver's side, locate a flat surface in an out-of-the-way place and mount the black converter box using the double-sided tape provided. The box should be positioned so it does not interfere with vehicle operation or occupant safety.
Locate a flat surface under the foam cargo tray and mount the black converter box using the double-sided tape provided.
Route the 4-flat connector through the driver's side trim panel into the side storage compartment and store it there when not in use.
Store the 4-flat connector in the spare tire compartment when not in use.
Reinstall all plastic trim panels, threshold, storage covers, floor coverings, and other items that were removed during installation. Be careful not to pinch or cut the wires during reassembly. Then test and verify the installation with a test light or by connecting a trailer.
Do not exceed the lower of your vehicle's towing manufacturer rating or the following limits: maximum stop/turn lights 2.1 amps per side (1 light per side), maximum tail lights 5.6 amps. Overloading the circuit can cause fires. Consult your vehicle's owner's manual and instruction sheet for additional information.
Wear safety glasses and use all safety precautions during installation. Be careful not to break the clips holding the cargo tray (Crosstour). Do not pinch or cut wires when reinstalling trim panels and covers. Ensure all connections are complete before testing.
Test and verify the installation with a test light or by connecting a trailer once installed. All connections must be complete for the T-Connector to function properly. The manual does not provide detailed test procedures beyond this.
Yes. The T-Connector is designed for both Honda Crosstour and Acura RDX with factory tow plugs. Installation procedures differ between the two vehicles.
Trim panel remover, 10mm socket and ratchet (or 10mm wrench), and test-probe.
Yes. On RDX, you must remove the spare tire to access the blue 6-pin tow plug near the foam cargo tray.
A 15 amp fuse is required. It must be installed in the vehicle's fuse box in the empty location specified in the manual.
Maximum stop/turn lights: 2.1 amps per side (1 light per side). Maximum tail lights: 5.6 amps. Do not exceed the lower of your vehicle's towing manufacturer rating or these limits.
Test the installation with a test light or by connecting a trailer. All connections must be complete for proper function.



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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