Factory Brake controller setting
when trying to adjust my factory brake controller there are 2 settings, light and heavy trailer. Then when I hit the + to increase more braking the numbers are negative and increase from -.5 to -9.5? Why are not these numbers positive and increase when more current is applied? The - button just returns it to lower readout? Maybe I should reset to light trailer to see if they are positive? Anyone else have similar readouts on factory brake controllers?
"Never in doubt,..... often wrong!"