Check the switch itself to see if there is both power in and power out when pressing the switch.
If no power in, follow the wire back to the fuse, checking for a break.
If no power out then replace the switch.
If both are present then check at the motor to see if there is power there when pressing the switch.
If no power in then follow the wire back to the switch checking for a break.
If power in then it's probably time to replace the motor.
2013 Winnebago Sightseer 36V