Help! headlight, tail light, & instrument lights not working

[Dylan]

Hi there guys
Looking for some advice
Recently mylights  have been a little weird, switching off and on while riding, at least once per ride
But now they wont turn on at all, front back & instruments, hi & low beam.
Fuse by battery is ok, is there a relay i should check & where is it.
Ive put a multitester at a headlight connector and there is nothing.
Anyone has an idea what it could be.
Many thanks
Dylan