1993 Buick Riviera Owner's Manual - Page 267

Windshield Wipers The windshield wiper motor is protected by a circuit If breaker and a fuse. the motor overheatsdue to heavy snow, etc., the wiper willstop until the motor cools. If the overload is caused by some electrical problem and it not snow, etc., be sure to get fixed. Power Windows and Other Power Options Circuit breakers in the fuse panel protect the power windows and other power accessories. When the curren load is too heavy, the circuit breaker opens and closes, protecting the circuit until the problem is fixed or goe away.