Hi Ya, I have installed a 12volt caravan light. A lot of people use them when they modify their transit vans etc. I have a solar panel outside to catch the suns power wired to a regulator, from there wired to a 12volt care battery, I got free when it was being thrown out, to a normal house socket from there a wire runs from the socket to a 12inch caravan light. It's quite bright and a bonus in my shed. From the socket I can run a caravan water pump and transfer water around butts or water plants as required. I am please with it. There is plot holder on our site has 2 car batteries and a solar panel and used the same lights when he saw mine, he has 4 lights wired in and he also runs a 12 volt strimmer from it as well. I can supply the name of the if your interested, I was quite surprised how bright the light is. Good luck