This is one of those, "Why didn't I think of that?" things. A friend described it to me and it works like a charm for splicing wires together. It works much better than "extra hands."

[link=http://www.airfieldmodels.com/information_source/how_to_articles_for_model_builders/tools/wire_splicing_jig/index.htm]Make a Wire-Splicing Jig[/link]