I would not worry about it if she charges fine. I tested everything on mines once. The battery, battery connections, chassis ground, tested the alternator output with a carbon pile, cleaned up alternator plug and connections, checked at the dash itself but nothing resolved it. I then got the entire electrical schematic and blew it up and made it a 2ft X 2ft followed the dash light and the whole nine yards. Its a very simple machine but that one wire has a lot of connectors it goes through. I finally got sick and tired of it and did not want to tear the machine to find a loose wire so I let it be. Its annoying but I am happy if she starts everyday.