ok,,the 97 fuel injected road king is dead,,no power anywhere,,checked battery, it's good checked regular fuse block ,,all good,,are there other fuses or circuit breakers I should be testing?
You have a main breaker but they will usually only open under heat or a load above the rated amps or a combination of both.
I would check the battery connections themselves. Insure that both ends of both cables are removed and wire brushed then replaced and tightened up enough for a good contact. This is usually the cause of the problem when this happens.