Thanks everyone...for your responses, especially trainroomgary. This post kinda got off on power supplies, which, at the time, I wasn't worried about, but then gunrunnerjohn jumped in and I was interested. He has helped me in the past with LED car lighting, much to my success. I have a flat car and an incredible Sony mini-camcorder and will try something with that first. Then if it works out, I can go smaller. It would be nice to have it broadcast to my TV or computer screen, but I can wait for that. My layout is so sparse right now, I just want to get some engine-level videos of what my "broken-ankle buildings' look like. Just to indicate how naive I am, it never occurred to me to "PUSH" a flat car with a camera on it. I just thought it had to be on the engine. Oh well, live and learn. Guess that's what this forum is all about.
Anyway, I'm much in debt to all of you...and thanks again.
George (G3)