Brand new to riding (besides the one time when I ran over a shrub on an isty bitsy tiny dirt bike when I was 6). Wanted something with a bit of nostalgia so I bought a beautiful 86. Original paint, not a scratch and looks GREAT! However, the one thing I have noticed not working is the speedometer AND tachometer. The needle in the speedo is not moving at all and the tach one bounces but I am assuming it is from vibration. Is there something in common that would cause them both to stop or am I looking at two separate issues? Also, noticed the battery drains daily after charging at night. Talked to the previous owner and it is 4 years old. I am assuming that is the issue and getting a new one today.