Redarc Brake Controller Testing on a 2017 Subaru Outback

Updated 04/22/2021 | Published 04/20/2021

Question:

I have just installed the Redarc Liberty brake controller along with ETBC7 and the recommended 4 wire harness. As far as I can tell, the installation matched the instructions identical to the video, but the brake control signal does not show up on my 7-pin connector tester. I get running lights, turn signal, 12 volt aux power and running lights, but now brake controller signal. I have NOT yet connected a trailer with brakes, but am setting up for future use and need to know it works. When I depress the manual override button the blue light glows for a few seconds then goes dark. Please help. As a side note, my Subaru dealership printed out a schematic of the brake switch wiring and told me to tap into the black with white striped wire coming off the brake switch. There are half a dozen wires coming out of the harness. Any ideas?

asked by: Charles D

Expert Reply:

I believe that the Redarc Liberty Brake Controller # RED24FR is hooked up correctly to your 2017 Subaru Outback. The blue light flashing when you push the override button is telling you that a trailer is not connected. Also remember that with this brake controller being proportional it will want to see the brake light but also feel the inertia of the vehicle stopping.

expert reply by: Bud M