[sambo]

Slowy, I'm also grappling with the last bits of my wiring. Fortunately I have plenty of areas to run conduit. But how about in your case, get some steel/alum section and attach it to the underside of the frame and run the wires through - like a conduit - then paint it to match the frame? Without seeing photos I'm not sure how effectively it will blend in. Surely it will look better than a stack of ribbed conduit and cable ties all over the place.

By the way, that Kenmer radiator mount has just doubled your crash protection rating, you realise that! Solid work.