the lighter hole plug was different than the rest, as Pete sez, they had the springy finger to fit the large hole [chrome with optional chrome knobs, black plastic with
standard black knobs] like the radio dial blanking plate - the throttle hole plug had a peg on the back that was captured by a sheet metal press-nut - the radio knob-hole plugs had a plastic tube shaped part that snuggly fit those holes with no keeper .... I've only ever seen one original lighter button, and the other 2 types wouldn't hold in that larger hole
Bill
