Abstract: Systems and sub-systems for supplying squeegee buckets with automobile windshield washer fluid. Some systems include a fluid containing reservoir elevated above the squeegee buckets so as to gravity feed the buckets. One system includes a fluid quantity sensor coupled to a squeegee bucket for indicating a predetermined low fluid quantity in the squeegee bucket, calling for the addition of fluid. The fluid quantity sensor can be coupled directly or indirectly to a controllable fluid supply source to add fluid into the squeegee bucket interior. Some systems have continuous or analog fluid quantity sensor outputs while other systems have discreet fluid quantity sensors indicating that a low limit has been reached. Some systems utilize level sensors while other systems utilize weight sensors. One system includes a level sensor in the form of a float adapted to trigger an electrical switch upon reaching a low level.