12v lighting issue... Could use some help :) (32BHDS)

Unless a previous owner messed with it, all of the lights should go through a fuse in the 12V panel.

Have you determined if the malfunctioning lights are on their own circuit?

Try measuring voltage when the switch is closed but the lights are not working. Is there power available at the light when it's not lit up?

Have you tried tightening all the connections? And checking all grounds?