I would also like to add that in the last 25 years, I've gladly gone backwards in field box technology. Gone are the days of power panels that go dead from corrosion loose connections and moisture. Same with electric pumps that fry and leave you dry for the day...and mosly to heck with glow driver and starter wires to get caught shorted and cut by props. A simple hand pump, and portable glow driver do the same job, only less complicated and last longer. Zip-tying my battery under (attached to) my starter was one of the coolest and most portable thing I've done! Very often on a busy afternoon it makes it's rounds on the flight line...as in engines that die while taxying out etc...