I recently purchased a 1986 Honda Shadow VT1100. It has an Engine Temp Gauge, and a Fuel Level Gauge on the gas tank. The fuel gauge lights up, however the needle does not move. Does anyone happen to know what could cause this? I'm slowly learning how to work on these, but do not have the mechanical inclination to remove the gas tank or check for an internal tank sensor. Is this a known issue? Any help would be appreciated!