I'm not sure Dixie Chopper can tell you. In my experience on these things grounds are the no. 1 Culprit. Check the battery terminals for good connections. The negative battery cable where it bolts the starter mounting bolt. Not just that you think it is tight take it loose clean the cable end might even put a star washer under it and tighten it good. Don't strip it as this bolt is threaded into the starter. When you push the start button do any other lights light up?