Thanks, that’s very helpful. It looks like he’s got the leads to the lamp twisted – does this help somehow? Of just for neatness?

Another “newbie” question: I assume we dont want to use smaller gauge wire (e.g. 22), but is it OK to use larger gauge wire, e.g. 16 instead of 18? I cant imagine it would be a problem, but maybe there some EM interference issue or something like that…

Also, in the non-eyelet board earlier, what are those pieces to which all the components are attached? Somehow they protrude over that board?