Denny,
it was in a technical article that I read lately. I am racking my brain to remember which one it was. I subscribe to four publications and usually pick up two others. It is kind of like an addiction with me!
Red58's wattages are close to what I remember reading. I think today we have gone over the top with some of the lights on cars. Some of them that may be aftermarket I consider dangerous to oncoming drivers.