The reverse motor circuit has a circuit breaker to prevent current overload conditions to the motor and power cabling.
See
Figure 1. The circuit breaker is located in the electrical caddy. This manually resettable circuit breaker has a red trip pushbutton (2) and a reset switch (1). To manually trip the circuit breaker, push down on the trip pushbutton (which causes the reset switch to extend out).
If the reset switch is extended as shown, the reverse circuit is open/tripped. Push the reset switch into the center of the circuit breaker body until an audible click is heard to reset.
If the circuit breaker repeatedly opens under non-strenuous loading conditions, or if the reverse motor will not operate after resetting circuit breaker, see a Harley-Davidson dealer.
NOTE
The reverse lamp in the instrument cluster illuminates even if the circuit breaker is tripped/open.
It is a normal function that the pinion on the reverse motor engages the ring gear when the circuit breaker is tripped.
Figure 1. Reverse Motor Circuit Breaker