OK Brains Trust here's the suprise ending.
SO I check all the wiring I had moved... all ok.
Try start up at full throttle, no go.
Then my wife says, 'what about that loose wire to the battery last time it wouldn't start and I said where does that go?' and I still don't know what it is but I went looking for it and it had fallen down inside the fairing. Its an earth wire which I now think is B/Y and links the clutch to the starter cutoff relay, diverted directly to the neg terminal by a service mechanic once. That's my guess but I'm relying on female intuition here.
SO now I connect this lonesome wire to the neg terminal and BINGO ALL SYSTEMS GO, including ABS RED LIGHT OFF!
Dunno why it seems to have fixed itself.. prob got sick of my faffing round.
SO thanks again for all the advice, mine would just be get your significant other to check it out and deliver the non-linear, lateral thinking verdict before you spend days pulling all the tupperware off the thing. I swear my next bike will be naked or at best a half fairing! I'm racing a little '92 honda CBR400RR and the glass comes off in about 2 minutes! Way to go.