Starting/electrical problem

Hello my truck has had a problem with battery drain if not driven in couple days so installed new battery. Couple months down the road when starting if you hold the key in start position it will crank barely then starter will speed up to normal crank but no start. Turn key to off and try starting again it will fire right up. I have looked at all connections at starter and battery all looks fine. Sometimes the wipers will jump a little or will do a full swipe when starting truck and the wiper switch is in off position. I am thinking it may be a ignition switch issue. Any thoughts on this anyone? I would very much appreciate the help if anyone can! Thanks in advance, Heath