This is a problem that should be easily solved with a multi-meter.
get the bike hot hopefully return home before turning it off then use the meter to determine where the power is breaking. May be a bad fuse holder or a loose wire it is likely something simple you will need to have an understanding of the flow of power a wiring schematic might be helpful and a basic knowledge of how to use a multi-meter.
get the bike hot hopefully return home before turning it off then use the meter to determine where the power is breaking. May be a bad fuse holder or a loose wire it is likely something simple you will need to have an understanding of the flow of power a wiring schematic might be helpful and a basic knowledge of how to use a multi-meter.