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Tekonsha
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2004 - 2023 Freightliner XC
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Tekonsha trailer brake controller harnesses exist to make connecting your brake controller to your vehicle as easy as possible. These custom two-plug units are specifically designed to be used with any Tekonsha brake controller. The Plug & Play feature on the Tekonsha wiring harnesses makes them easy to install. Simply plug one end of the harness into the back of your desired Tekonsha brake controller and the other end into the port in your vehicle. No cutting, splicing, or taping required.
Each wiring harness is made up of four copper wires wrapped with a braided nylon thread to insulate the wires and protect them against nicks, punctures, and elevated temperatures. The four-pin Plug & Play connectors on each end of the harness are uniquely designed, with one end to fit each vehicle based on make and model year specifications, while the other end plugs easily into any Tekonsha brake controller.
Tekonsha trailer brake controller harnesses are custom designed, giving you plenty of wire to reach between where it is connected to the vehicle and where it connects to the brake controller without stretching or straining the wires. And because Tekonsha is the leader in wiring and electrical, you can relax knowing your connections will be safe and secure, so you can hit the road with confidence! With Tekonsha, Lifes a Journey. Stop Often.
| BRAND: | TEKONSHA |
| PART NUMBER: | 302700 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.4 LBS |
| WIRE COLORS: | BLACK, RED, BLUE WHITE |
| CONNECTOR GENDER: | FEMALE |
| CONNECTOR SHAPE: | SQUARE |
| CONNECTOR QUANTITY: | 2 |
| TERMINAL QUANTITY: | 4 |
| TERMINAL TYPE: | BLADE |

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 |
|---|---|---|
| 2004 - 2023 | Freightliner XC | Trailer Brake Control Harness Uses all existing holes. No Drilling required Install Time is 5 minutes Custom 2: plug harness designed to plug directly into your vehicle and brake control Comes in attractive packaging for retail shelf |
Yes, the Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 302700 (Part #TK302700) is designed to fit the 2004-2023 Freightliner XC.
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 302700 (Part #TK302700) fits 2004-2023 Freightliner XC models. The 2023 model year is the last year covered by this part number. For newer models, check for an updated version.
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 302700 (Part #TK302700) fits the following vehicles: 2004-2023 Freightliner XC. Always verify your specific year, make, and model before ordering.
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 302700 (Part #TK302700) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The 3027-037 is a wiring adapter that connects an electric trailer brake controller to a motorhome's electric brake control harness. It allows the brake controller to interface with the vehicle's existing brake control system. The adapter is designed for use with Tekonsha brake controllers.
The adapter is designed for motorhomes equipped with electric brake control systems. It connects to a 6-pin electric brake control harness connector located under the dash, left of the steering column. The exact compatibility depends on your motorhome's make, model, and manufacturer. If you cannot locate the connector, contact your motorhome manufacturer for confirmation.
No. The 3027-037 is designed for use with Tekonsha brake controllers only. For more information and to find a suitable Tekonsha brake controller, visit www.Tekonsha.com for the complete listing.
The adapter works with motorhomes that have a 6-pin electric brake control harness connector under the dash, left of the steering column, and use Tekonsha brake controllers. Connector location may vary by make, model, and manufacturer. Contact your motorhome manufacturer if you cannot locate the connector.
The 6-pin electric brake control harness connector is located underneath the dash and to the left of the steering column. Depending on your motorhome's make, model, and manufacturer, the brake control housings may be bundled with other wires, hidden further under the dash, or in another location. If you cannot find the connector, contact your motorhome manufacturer for more information.
1. Locate the vehicle's 6-pin electric brake control harness connector under the dash, left of the steering column. 2. Plug the brake control adapter into the mating receptacle on the backside of the brake controller first (before connecting to the vehicle). 3. Then plug the adapter into the vehicle's electric brake control harness connector. 4. Follow all brake controller manufacturer's installation instructions, mount the unit as directed, and perform test procedures as instructed.
Plug the adapter into the mating receptacle on the backside of the brake controller first, before attaching it to the vehicle connector.
Always wear safety glasses during installation. Read and follow all warnings and instructions included with the product before beginning. Read, understand, and follow all warnings and instructions printed on the tow vehicle's battery. Do not exceed the lower of the towing manufacturing rating (including in your vehicle owner's manual) or the specific amperage ratings stated on the product. Overloading circuits can cause fires.
Do not exceed the lower of the towing manufacturing rating (including in your vehicle owner's manual) or the specific amperage ratings stated on the product. Overloading circuits can cause fires. Refer to the product labeling and your vehicle owner's manual for the exact amperage specifications.
Overloading circuits can cause fires. The product has specific amperage ratings that must not be exceeded. You must also respect the lower of either the towing manufacturing rating (as stated in your vehicle owner's manual) or the specific amperage ratings on the product itself.
After installation, complete all steps per the electric brake controller manufacturer's instructions. Mount the brake controller unit as directed by the manufacturer. Perform all test procedures as instructed by the brake controller manufacturer. Do not operate the system until all installation and testing steps are complete.
Yes. After installation, perform all test procedures as instructed by the brake controller manufacturer. Complete the installation per the brake controller manufacturer's instructions and mount the unit as directed.
The manual does not specify any tools required for installation. The adapter is a plug-and-play connector that plugs into the vehicle's existing 6-pin brake control harness connector. However, you may need basic tools to access the connector under the dash. Refer to your brake controller manufacturer's instructions for any additional tools needed.





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