head lights

Just bought a 2000 Bandit 600, as a fixerupper. Oh what have i done? Im new to biking and armed with little or no bike knowledge... Got the Bandit all seemed well on the test ride, but once i got it home im finding all sorts of little problems, It was originally a faired model but the previous...

On my 2007 650r ninja my headlights, tail lights and gauge lights keep flickering tried charging the battery even on a full charge lights still flicker when riding or stopped.