Have any of the "older" framebuilders ever heard of modifying a frame for internal computer wiring and permanent sensor mounts? I just picked up a 1985 Bridgestone 700, that has this type of modification. It was done some time before 1988, as the frame had a California registration decal from 1988 that was on top of the new paint.'
Unfortunately, the wires were cut at the downtube. I'm considering trying to track down a vintage Cateye so that I can restore this unusual piece.