Installing a Redarc RED44FR on a 2021 Ford Ranger

Updated 06/21/2021 | Published 06/19/2021

Question:

Ford includes a Trailer Lamp ECU made by Lumen Part Number SST-4000G with the Ford brake controller kit. Please answer this very specific and straightforward question: If I purchase your part number part # RED44FR and not the Ford recommended kit, if the Automatic Emergency Brake is activated WITHOUT THE BRAKE PEDAL BEING DEPRESSED, will your part # RED44FR apply the trailer brakes? There must be a reason Ford requires the Lumen Part Number SST-4000G and I just want to know the reason why?!

asked by: Anthony L

Expert Reply:

The Redarc # RED44FR will only apply the brakes when the brake pedal or manual override is depressed. However, if the emergency braking system engages the brake lights to inform drivers behind you are braking, you could wire the Tow Pro brake signal to the trailer plug brake wire and capture all braking situations.

From what I could find, this is basically what the SST-4000G will do. With this being a pretty new thing though, there wasn't a lot of information I could find about it.

expert reply by: Lazer S