Aerox yq50 lc 2003

Ive got a aerox yq 50 lc 2003
Problem with my dash lights
When i turn highbeam on on my lights it will also bring on the oil light when im riding they will both flicker on off constant i didnt have a bulb in at the time ive put a bulb in now and my main beam on dash is not working but when im riding they still flickering on and off could it be a shortage anywhere anyone know the problem ?