Meltdown averted!
That's what it was; and yes, I did remove the park light sockets.
I was just now in the garage going through everything once again, and discovered the no. 8 fuse blown; replaced it and everything lit up as normal. I was confused because in the manual is says that fuse 8 is "Clock, Position lights." It never occurred to me that those little devils had such power.
Learning new R3 info every day.
Many thanks for the explanation Now I can ride tomorrow.