I have been looking at brake controllers and see the P-3 on Amazon and the hugh amount of reviews (358 as of 11-7-14) and 5 star rating..
one question i have is why is there not a system that interfaces with the brake pedal to give a better braking solution. I understand these controllers use accelerometor which determines the rate of braking and applies power to trailer brakes accordingly.
I would think a system that is tied to brake pedal might work better or now with the new digital system they are better..
just throwing out ideas :)