Brake Controller Solution for 2021 Ford F-750

Updated 02/26/2025 | Published 05/19/2021

Products Featured in This Question

Hook Probe Circuit Tester

(70)

$12.41

Question:

2021 F-750 air braked truck. Need a controller for an electrically braked 2 axle equipment trailer.

asked by: Doug R

Expert Reply:

To install a brake controller on your 2017 Ford F750 you will need to hardwire it as there are no factory plugs under the dash. There will be some wires located under your dash that are located on the driver side. You will simply need to use a Circuit Tester # PTW2993 to test them although sometimes manufacturers will label the wiring.

I recommend installing the Tekonsha Prodigy P3 # 90195 as it is very easy to install and features a user-friendly LCD screen that doesn't use codes like other brake controllers do. To install it you will need to connect the following wires from the included pigtail to the following functions:

Black - 12V Power
Blue - Brake Controller Pin on 7-Way
White - Ground
Red - COLD Side of the Stop Light Switch (only gets hot when brake pedal is pressed

expert reply by: Jameson C

Mark M.

2/26/2025

2024 F-750 w/ air brakes and needs brake controller for 2 axles 35' equipment trailer w/ 7 blade connection . Would this also fit my application or would additional wiring be needed?

Jameson C.

2/26/2025

@MarkM Everything mentioned in the above mentioned answer would be applicable to your 2024 F-750. Your truck doesn't have brake controller wiring so you would have to hardwire it like mentioned above as well.