Been away from my 330 since Oct, seem to recall the wiper switch is a toggle at the helm I found replacement switches online last year. EDIT: newwiremarine was the vendor with the rocker switches.
Replaced all the switch covers, so I could read them, used: https://rockerswitchpros.com/
Someone else on forum recommended, they did a good job. Were responsive in email.
They have the actual Contura Switches also.
My 2007 330 has a valve to activate the windshield washer, not a switch. My washer valve works off the normal fresh water system which is always pressurized if turned on. Much simpler than a switch and servo or pump as a separate system.