I've picked up some nice looking 12v puck lights. They are meant to be under cabinet lighting. They come with a 120/12v power supply. But I would like to eliminate that and wire them straight to the battery in my house boat. But I'm not sure if they would have resisters built into the lights them self. Or if the current limit was set by the power supply. Not quite sure how to proceed from here. If there is no resisters what size resister would be appropriate? The box claims each puck is under 2 watts. And what would be the best way to test if they do have resistors?
Thanks for any info