If memory serves me, unlikely, older trailer brake controllers used a mechanical system, many were spring held ball-bering, some were pendulum types, & various other mechanical designs used to determine braking force…current to brakes, bla,bla (insert tech stuff)
One of my older controllers, circa 1980's (I was only 5 or 6 yrs old then
), was a problem when backing & I had to change/lower the sensitivity setting to keep the trailer brakes from dragging. My biggest problem was remembering to re-set it afterwards.
A Lot of good advice here. I used to drive a co. truck that had the word/acronym G.O.A.L. on both outside mirrors, Get Out And Look