Gdetrailer wrote:
Lower voltage at the brake magnets equals LESS CURRENT DRAWN BY THE MAGNETS.
This is BASIC DC ELECTRICITY 101.
Something worth checking. Are the GROUND connections all good ? You could be losing voltage there.
As a retired EE, I ASSUME modern brake controllers work differently than old one. Old one use a weight on a rotary shunt
(variable resistor) to change the amount of current sent to the magnets.
(Ohm's Law say, if the voltage is constant, then changing the TOTAL RESISTANCE in the circuit will change change the circuit. V=IR). Now a days I would ASSUME they use pulse width modulation which most meters can not properly read.