Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 303500Tekonsha$29.08Out of Stock
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2014 - 2025 Toyota 4Runner
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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: | 304100 |
| WARRANTY: | LIMITED 1 YEAR WARRANTY |
| WEIGHT: | 0.32 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 |
|---|---|---|
| 2014 - 2025 | Toyota 4Runner | Trailer Brake Control Harness Uses all existing holes. No Drilling required Install Time is 10 minutes Custom 2: plug harness designed to plug directly into your vehicle and brake control Comes in attractive packaging for retail shelf |
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 304100 (Part #TK304100) fits 2014-2025 Toyota 4Runner models. The 2025 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 304100 (Part #TK304100) fits the following vehicles: 2014-2025 Toyota 4Runner. Always verify your specific year, make, and model before ordering.
Yes, the Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 304100 (Part #TK304100) is designed to fit the 2014-2025 Toyota 4Runner.
The Tekonsha Trailer Brake Controller Custom Harness, Vehicle & Brake Control Ends 304100 (Part #TK304100) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The 3041-037 is designed for vehicles with a factory electric brake control harness. The harness must have a 5-pin connector located underneath and to the left of the steering column, taped to another harness near the emergency brake pedal. The manual shows a Toyota 4Runner as an example application. To confirm compatibility with your specific vehicle, check your vehicle's owner's manual or contact the manufacturer, as the manual does not provide a complete compatibility list.
The adapter includes a 5-pin connector that mates with the vehicle's electric brake control harness, a white wire with an eyelet and screw for grounding, and the brake control adapter itself. The eyelet and screw are used to secure the white ground wire to an existing ground stud or to a 3/32" hole that you drill.
The electric brake control harness is located underneath and to the left of the steering column. It is taped to another harness near the emergency brake pedal. The harness has a 5-pin connector that the adapter plugs into.
First, plug the brake control adapter into its mating receptacle on the backside of the brake control unit itself. Then locate the vehicle's electric brake control harness connector (5-pin) and plug the adapter into it. Do not plug the adapter into the vehicle connector before connecting it to the brake control unit.
Drilling is not required if a suitable grounding point already exists near the brake control harness connector, such as an existing ground stud. If no suitable ground point is available, you must drill a 3/32" hole to secure the white ground wire using the eyelet and screw provided. Do not drill into the vehicle floor or bed. Clean dirt and rustproofing from the area before drilling.
The manual specifies that you will need a drill with a 3/32" bit if no existing ground stud is available. Safety glasses are required during installation. The adapter comes with an eyelet and screw for grounding, so no additional fasteners are needed for that step. The manual does not specify other tools required.
The adapter supports a maximum of 4 axles with 8 brakes at 24 amps. Do not exceed the lower of your towing manufacturer's rating or this maximum capacity. Overloading the circuit can cause fires. Consult your vehicle's owner's manual and the brake control manufacturer's instruction sheet for additional information.
Yes. After plugging the adapter into the vehicle's electric brake control harness, you must follow all installation instructions provided by the electric brake control manufacturer. You must also mount the brake control unit as directed by the manufacturer and perform all test procedures as instructed. The adapter installation is only the first step; the brake control unit installation must be completed per the manufacturer's specific requirements.
Wear safety glasses during installation. Read and follow all vehicle warnings and installation instructions before beginning. Do not drill into the vehicle floor or bed when securing the ground wire. Clean dirt and rustproofing from the grounding area before drilling. Follow all brake control manufacturer's installation instructions and perform test procedures as instructed.
Locate a suitable grounding point near the brake control harness connector. This can be an existing ground stud or a 3/32" hole you drill. Before securing the white ground wire, clean dirt and rustproofing from the area. The white wire is secured using the eyelet and screw provided with the adapter.
The adapter fits vehicles with a factory electric brake control harness and a 5-pin connector located under the steering column. The manual shows a Toyota 4Runner as an example. Verify your vehicle has this harness before purchasing.
Drilling is required only if no existing ground stud is available. If needed, drill a 3/32" hole for the white ground wire. Do not drill into the vehicle floor or bed.
You need safety glasses and a drill with a 3/32" bit (if drilling is required). The adapter includes the eyelet and screw for grounding.
Maximum 4 axles with 8 brakes at 24 amps. Do not exceed the lower of your towing manufacturer's rating or this limit. Overloading can cause fires.
First plug the adapter into the brake control unit's mating receptacle. Then plug the adapter into the vehicle's 5-pin brake control harness connector. Follow the brake control manufacturer's instructions to complete installation.
Wear safety glasses. Do not drill into the vehicle floor or bed. Clean the grounding area of dirt and rustproofing. Follow the brake control manufacturer's instructions and perform all test procedures.
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