On this forum, and on some other forums, I have seen posts about some great solar powered locomotives and trams.
Unfortunately without any details on how these where build.
Does somebody know where I can find some basic instructions / wiring diagram?
I like the idea very much but I don't want to invent the wheel if somebody has already done that, if you know what I mean

A step by step ' how to' and "keep it simple" electronics would be more than great.
All advise welcome!
Paulus