Michael,
The left front inner fender of all 1941s have the holes for mounting of the washer bottle bracket. The location of the bottle bracket holes is on the rear surface of the inner fender. The bracket requires three screws, however, two hole patterns are provided. The nozzles are mounted on the wiper towers.
The 1941 washer bits and pieces differ in detail from the postwar versions. The dashboard control valve and pull knob, which mount in the side "Accessory" knob position, are hard to find.
Grandpa