I have a 1981 yamaha virago XV750 and mixed the positive and the negative wile trying to jump it.. oops, the bike is now lifeless except the engine will turn over when I use a hammer to connect the + and - on the solenoid. Sooo I don't THINK it is the solenoid or starter. Also The bike is in neutral and with the key on the neutral light remains dim. Hope this is enough info