Just found these Led puck lights on sale at a local lighting supply store for $30.00. They were originaly $119.00. they are designed for use in your home with the 12v/110 transformer. But I think you can just wire them directly to your 12v source. I tested one for a few minutes and they seemed to work fine. I can't guarantee that they wont be damaged in the long term, but for the price I'm willing to find out. I can give out the name of the store and PH# to anyone who want's it. Just PM me.....PS. There are only a few sets left and they are white in color.