:Sport:
Sorted !
Had a cuppa and a re-think. Didn't reckon it was anything too technical and I was right. A simple 'back to basics' approach worked. I separated the relevant connector blocks, dug out the wiring diagram and started checking continuity.
Took me longer to write this than...
I noticed some wiring on the rhs of my 07 FZ6sa looked bodged, so I set about removing insulating tape with a view to tidying it up. I noticed that it had been 'modded' but the wire cut, so I removed this and replaced the light's connector block with a new one from Halfords. Left is works as...