Mr.R wroteYes there are such looms, they changed over the years as the bikes developed, later Corse models mounted the ECU etc in the nose of the fairing, which isn't practical if you want to run a headlight.
You'll probably find a diagram in a Corse handbook/manual.
Steve R
Of "corse" ... but having searched this fine tome and discovered nix, can you suggest another avenue?
What's a fucking headlight?