2001 40 Express - Windshield Washer Will Not Stop

[bruce@bigrivergroup.com]

2001 40 Express: the windshield washer squirts water onto each of the 3 windshield sections. Boat was in storage for one year. When I fired everything up, the washer will not stop, & the switch is not working to start it or end the wash. The main water pump keeps running because it needs to continually supply the washer. Is there a solenoid on the washer circuit that might be going bad? Any idea where that solenoid is, or how to fix this issue?  Thanks in advance.