Buy a regular light fixture from anywhere. You just need to get the 12v bulbs that will fit them. I did this in my bathroom with fixtures I made out of rum bottles, and in my living area with a light I found at thrift store. I found screw in 12v bulbs from a marine store online. They had an infinite variety of sizes US and European styles. I am usually plugged in to shore power, but I wanted to be able to still use my lights when traveling between parks and boondocking. When I first did my bathroom lights and used regular bulbs they worked great, until I unplugged lol-now with the 12v bulbs all is well. I bought a bunch extra for when they burned out, but it has been nearly two years and they are still good. Just be aware that the wattage isn't the same as for regular bulbs. I bought some 40 watt and some 15 watt. The 15 watt are bright, comparable to a 40 watt regular bulb (The bathroom fixture took three and it is well lit). The 40 watt are very bright and I would only use them if the fixture need one bulb.
