Originally Posted by
1simplexnut
Hi - they are an oddball critter . the frame has holes in top tube for reputed to be white plastic pop in clips .
Neve seen this set up on any other Carlton .
Have a 1960s photo somewhere showing them from a distance on a race frame of the time .
Pic below of one of the top tube holes .
Carlton top tube
never seen one of those (holes or the plastic "guides" that pop in) before, either! Bound to be a rare item so good luck with the search, I think just resorting to metal TT cable clips is the sensible thing in this case.