- Anthony -
The ribbon resistors up front should be switched out of the circuit
by the speed control setting once the tractor is underway. That is
likely to be second or third notch on the controller (not knowing
what model your tractor is). First notch definitely keeps the
big resistor in the circuit and does waste power.
Switching the resistor out requires closing of one of the big
contactors which is quite audible.
E-20 has a cruise control button which takes the big resistor(s0 out
of the circuit - most economical operation, batterywise.
Rhett