I have been resurrecting a 1987 Fourtrax 1987. Installed a new battery and drained and fresh gas in tank. Started easily. Drove it about 50 yards and washed it down good. Now the neutral light will not come on and will not go into neutral. Will not start with starter switch unless neutral light is on. I did get it to start once while in gear using pull cord but that was only time it would start with pull cord. What is my problem and what do I need to do to get the neutral light on so it will start with starter switch? Checked fuse and it is good Any suggestions would be appreciated.