Ford F-150 (2019–2020) Trailer Brake Controller: Options and Install
Direct Answer
For the 2019 and 2020 Ford F-150, adding a trailer brake controller generally comes down to two paths: retrofitting the factory integrated trailer brake controller (ITBC) or installing a quality aftermarket unit. The factory setup is preferred for seamless integration with the truck's dash, cluster displays, and existing wiring, but it usually requires a compatible dash panel or trim bezel and, on many lower trims, enabling the feature through vehicle software such as FORScan or a dealer tool. Aftermarket controllers work broadly across trims but mount separately and do not appear in the factory instrument cluster menus.
Why the Trailer Brake Controller Matters
A trailer brake controller sends a proportional or time-delayed electrical signal to electric trailer brakes. On the 2019–2020 F-150, the factory integrated controller is a plus/minus switch and manual slide lever located in the center stack area. It adjusts gain and provides a manual trailer brake application. The system also ties into the truck's trailer sway control and can display trailer brake settings and faults in the instrument cluster. Aftermarket controllers perform the same core braking function but do not integrate with the F-150's factory trailer menus.
Factory Integrated Trailer Brake Controller (ITBC) Option
The factory ITBC was available on many 2019 and 2020 F-150 configurations as part of the Max Trailer Tow Package, certain tow packages, or as a standalone option on higher trims. Trucks that did not come with the controller often still have the necessary under-dash connector and chassis wiring in place.
Retrofitting the factory controller involves replacing the small pocket or blank panel below the climate controls with the correct switch assembly and, depending on trim, the matching dash bezel. The electrical connector is typically taped or clipped behind the panel. After physically installing the controller, the vehicle may need the feature activated in the Body Control Module or instrument cluster configuration. Some trucks recognize the controller immediately; others require a dealer IDS session or FORScan parameter change before the plus/minus controls and cluster gain display become functional.
Aftermarket Trailer Brake Controller Option
Aftermarket proportional or time-delayed controllers from brands such as Tekonsha, Curt, and Reese can be installed on 2019 and 2020 F-150s. They are a practical choice when a truck has an unusual trim combination, when you want to avoid software changes, or when you prefer a controller with a specific display or adjustment feel. Installation uses a vehicle-specific plug-and-play wiring adapter that connects to the F-150's under-dash trailer brake connector, avoiding the need to splice factory wires.
Comparing Factory and Aftermarket Controllers
The choice depends on integration, installation effort, and how the truck will be used. The factory controller wins on cabin appearance and cluster feedback. It looks original, uses the truck's own diagnostics, and provides trailer brake gain and output messages through the driver information display. The main downside is the possibility of requiring software activation and the need to source the correct switch, bezel, and fasteners for the specific trim.
An aftermarket controller is easier to install on many trucks because it is a standalone module with a plug-in adapter. It is also transferable to another vehicle later. However, it requires choosing a mounting location that does not obstruct the driver's knee or the lower dash, and its gain display lives only on the controller itself. Towing behavior is generally comparable when a proportional aftermarket controller is used, but it cannot send trailer brake status to the F-150 cluster.
Installation Notes for the 2019 and 2020 F-150
On the 2019 and 2020 F-150, the trailer brake controller connector is typically located behind the lower center stack panel or near the knee bolster on the driver side, depending on cab and trim configuration. The connector is a rectangular multi-pin plug. For the factory retrofit, the replacement panel should match the finish and contour of the original trim. For an aftermarket unit, the matching adapter harness plugs into this connector and routes to the chosen mounting point.
Before starting, disconnect the negative battery cable. Because the F-150's trailer brake circuit is part of the body electrical system, avoid probing connector terminals with generic test lights. If the factory controller does not respond after installation, the vehicle configuration should be checked with a compatible scan tool. The absence of a gain readout in the cluster after a factory retrofit usually indicates the feature is not yet enabled in software rather than a wiring fault.
Which Option Better Fits Your Priorities
Choose the factory ITBC retrofit if you want an original appearance, cluster integration, and are willing to handle possible software activation or dealer programming. It is the cleaner long-term option for a truck that will tow regularly and where resale presentation matters. Choose an aftermarket controller if you want a straightforward, transferable installation, do not need factory cluster messages, or want to avoid any chance of trim panel or software complications. For most owners who already have the factory wiring present and can access the correct activation tool, the integrated route is the more satisfying solution; for a quick and predictable install, aftermarket remains a strong alternative.