Columnist Jim Weir has completed his solar-powered battery charger, and it works! It may not be the fastest charger, but it is certainly up to the task of keeping a battery topped off, even in winter.
Wire stripping and crimping might seem like a basic skills, but when done improperly can have nasty consequences. Stein Bruch gives an overview of the proper tools and methods you'll need to keep your avionics humming.