brake controller

I am getting ready to tow our Bowlus Road Chief with our 2016 Model X 90D for the first time and tried to adjust the trailer brake today. The instructions say to increase the power setting until the manual override locks up the trailer brakes then back it down, but I was not able to lock it up...

I just finished the installation of my Tekonsha Prodigy P3 brake controller on my new Model Y. I wasn't able to find any tips specific to the Model Y in the forums, so I created a simple sharable YouTube video of my experience. Hint: You'll need a part from the Model X parts catalog! Hopefully...