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Tekonsha
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Select your vehicle to confirm this part fits.
2005 - 2007 Ford F-250 Super Duty
Confirmed to Fit
2005 - 2007 Ford F-350 Super Duty
Confirmed to Fit
2005 - 2007 Ford F-450 Super Duty
Confirmed to Fit



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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: | 306500 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.305 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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3 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2005 - 2007 | Ford F-250 Super Duty | 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 |
| 2005 - 2007 | Ford F-350 Super Duty | 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 |
| 2005 - 2007 | Ford F-450 Super Duty | 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 306500 (Part #TK306500) is designed to fit the 2005-2007 Ford F-250 Super Duty.
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 306500 (Part #TK306500) fits 2005-2007 Ford F-250 Super Duty models. The 2007 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 306500 (Part #TK306500) fits the following vehicles: 2005-2007 Ford F-250 Super Duty; 2005-2007 Ford F-350 Super Duty; 2005-2007 Ford F-450 Super Duty. Always verify your specific year, make, and model before ordering.
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 306500 (Part #TK306500) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The 18287-037 adapter is designed for vehicles equipped with an OEM electric brake control harness. The harness must have a 4-pin Grey connector located behind the storage pocket just above the vehicle's ashtray towards the center of the dashboard. Check your vehicle's owner's manual or contact the manufacturer to confirm your vehicle has this specific OEM harness before purchasing.
Vehicles not equipped with an OEM trailer tow package may still work with the 18287-037, but they may require additional fuses and relays to complete the output and battery feed circuits. These components are sold separately. You will need to consult your vehicle's owner's manual for the locations where these fuses and relays should be installed.
The maximum capacity is 4 axles with 8 brakes, drawing a maximum of 24 amps. Do not exceed the lower of your towing manufacturer's rating or this limit. Overloading the circuit can cause fires.
The electric brake control harness is located behind the storage pocket just above the vehicle's ashtray towards the center of the dashboard. It has a 4-pin Grey connector that matches the end of the brake control adapter.
1. Locate the vehicle's electric brake control harness behind the storage pocket above the ashtray. 2. Carefully remove the storage pocket. 3. Locate the 4-pin Grey harness connector at the rear of the pocket. 4. Disconnect the harness from the storage pocket. 5. Plug the brake control adapter into the vehicle's electric brake control harness connector. 6. Follow all brake control manufacturer's installation instructions to complete the connection.
Yes. The caution states: plug the brake control adapter into the mating receptacle on the backside of the brake control before attaching to the vehicle connector.
Complete the installation per the electric brake control manufacturer's instructions and mount the unit as directed. Perform all test procedures as instructed by the brake control manufacturer. Do not operate the trailer brake system until all tests have been completed successfully.
Vehicles not equipped with an OEM trailer tow package may require fuses and relays to complete the output and battery feed circuits. These are sold separately. Consult your vehicle's owner's manual for the specific locations and specifications of any required fuses and relays.
The adapter fits vehicles with an OEM electric brake control harness (4-pin Grey connector) located behind the dashboard storage pocket above the ashtray. Check your vehicle's owner's manual to confirm compatibility.
Maximum 4 axles with 8 brakes at 24 amps. Do not exceed the lower of your towing manufacturer's rating or this limit.
Yes. Complete installation per the brake control manufacturer's instructions, mount the unit as directed, and perform all test procedures as instructed.
Vehicles without an OEM trailer tow package may require additional fuses and relays (sold separately). Consult your vehicle's owner's manual for locations and specifications.





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