70s Power Wagon Ignition switch info needed !!

Greetings and Salutations
Have a new problem electrical of course truck sets a few days and it will turn over but not crank or fire !
Put battery charger on and it fires instantly - replaced battery but wasn't issue , and noticed while trying to start it WITHOUT battery charger hooked up when u release ignition switch and click to off motor turns a little the opposite direction!!!!
Trucks is a 76 model so went ahead and bought a new ignition switch but upon opening box unit just inserts into column nothing electrical visible on it but it's bought and going in ASAP any thoughts on main issue thanks.