Courtesy light switch

Hi all,
I have a 2008 zx190 skeeter bass boat! Yesterday I took it out and went fishing for a little while. When I got ready to leave, my courtesy lights would not come on. On the panel ( left of the steering wheel) the red lights where on, but when I pushed the “crtsy lights” button the lights did not come on and it made a buzzing sound from the panel. Any ideas what that could mean?

You need a 12v meter or test light and start from the switch and follow the power. My guess is a connector came loose or corroded causing your problem.