[jclark003]

I don't think there is a fuse after the switch. I would first make sure there is power on both sides of the switch to rule out a defective switch. Then I'm not sure how it's wired, but your boat probably has a remote control system that turns on the lights with a key fob. I believe it is made by powertouch and possibly defective and interrupting circuit. You may want to check online and see if it is wired in series. If not that then probably in the wiring somewhere. You can check the +12vdc side by connecting the ground direct to battery and the + at the light. Then check the other side by using the ground at the light and battery power. Voltage on only one side may point you towards where to look for a bad connection or break in the wiring. Or for that matter just pull another wire to the dash switch

Send Tiara an email with your HIN andthey will probably send you a PDFs of the wiring schematic. Good luck.