Install throttle cable, vehicle speed control cable (if equipped).
Remove the throttle cable, cruise control cable (if equipped) and the transmission line pressure cable.
It simulates the intrinsic friction that is present in the traditional throttle cable as it passes through the cable housing.
If you don't have such a signal available, you will have to rig a rotary POT variable resistor to the gas linkage ie coupled to something at the gas pedal or throttle cable running to the carb or Fl.
