Tekonsha Brake Controllers & Towing Wiring

Proportional and time-delayed brake controllers, plus vehicle-specific towing wiring

Most of this collection is towing electrical. Tekonsha's brake controllers come in two families. Proportional units, the Prodigy P2, Prodigy P3, Voyager and Voyager iD, sense the truck's deceleration and apply the trailer brakes in the same proportion. Timed units apply a preset ramp of braking power once the pedal is pressed; the Primus IQ and the timed setting in the Prodigy iD work this way. The controllers here run 30 amp outputs and cover one to four axles, with the Voyager iD rated for one to three.

The wiring side is the T-One family: 4-way flat harnesses with the ModuLite HD power module, listed for the 2025-2026 Acura ADX, 2024-2025 Chevrolet Trax and 2024-2026 Mazda CX-90 among many others, plus 7-way tow harnesses for the 2019-2023 Ford Ranger and 2020-2025 Toyota Highlander and fifth wheel harnesses that run a 7-way into the truck bed.

Shop Tekonsha by type

Proportional brake controllers

The Prodigy P2 and P3 are the mainstream choice for travel and horse trailers: an internal accelerometer, boost settings for heavy trailers and a plug-in vehicle harness on most late-model trucks. The Voyager is the entry unit; Prodigy iD and Voyager iD are the current generation of each.

Time-delayed brake controllers

The Primus IQ applies a preset, adjustable output over a set time once the pedal is pressed. It suits a single-axle utility trailer that tows a few times a year.

T-One 4-way flat wiring harnesses

Plug-in harnesses that connect at the factory taillight plugs and end in a 4-flat. The ModuLite HD module included with most of them powers the trailer lights from the battery through its own fuse, which protects LED and multiplexed lighting systems. Listings run from the Kia EV6 to the Chevrolet Trax and Mazda CX-5.

7-way tow harnesses and fifth wheel wiring

7-way harnesses add the brake, reverse and 12 volt circuits for trailers with electric brakes. The fifth wheel harness (1997-2026 Chevrolet, Dodge, Ford and more) runs a second 7-way socket into the bed so a fifth wheel or gooseneck trailer plugs in without a cable over the tailgate.

Shop by vehicle

• Chevrolet Silverado 1500 and 2500 HD, Trax
• GMC Sierra 1500 and 2500 HD, Acadia
• Ford F-150, F-250 and F-350 Super Duty, Ranger
• Ram 1500 and Dodge
• Toyota Tundra, Highlander and Grand Highlander
• Jeep, Kia, Hyundai and Nissan
• Buick, Lincoln, Volkswagen and Mercedes-Benz

Why Tekonsha

• Proportional braking as the default. Four of the five controller families here are proportional, the type you want on a tandem-axle travel or horse trailer.
• One to four axle coverage at 30 amps. Every controller listed handles up to four axles (the Voyager iD up to three).
• Wiring for new models. T-One harnesses are listed for 2025-2026 vehicles like the Acura ADX and Ioniq 5, including EVs.
• Matched with Draw-Tite hitches. Same parent company, so a Draw-Tite receiver and a Tekonsha harness are specified together.

Choosing the right Tekonsha controller and harness

Count the trailer's braked axles and pick a controller that covers them. Choose proportional for anything heavy, tandem-axle or towed often, and timed for a light single-axle trailer used a few times a year. Then check whether your truck has a factory brake-control port: if it does, add the plug-in harness for your make; if not, the controller hard-wires to the 7-way circuit. A 4-flat T-One harness is enough for lights only; electric brakes need a 7-way. If you are not sure what fits, contact us with your year, make, model and configuration.

Common questions

What is the difference between a proportional and a time-delayed brake controller?

A proportional controller measures how hard the tow vehicle is slowing and applies the trailer brakes to match. A time-delayed controller applies a fixed, preset output that ramps up over a set time whenever the pedal is pressed. Proportional units brake more smoothly and wear trailer brakes less; timed units cost less.

Do I need a brake controller?

Yes if the trailer has electric brakes. They only work when a controller sends current down the 7-way brake circuit; without one the trailer has no braking at all. Surge-brake trailers, common on boats, do not need one.

What is a Tekonsha T-One harness?

A vehicle-specific wiring harness that plugs into the factory taillight connectors and provides a 4-way flat trailer plug, with no splicing. Most versions include the ModuLite HD module.

Will the Prodigy P2 work with my truck's factory tow package?

Yes, with the Tekonsha plug-in harness for your make, which connects to the factory brake-control port behind the dash.