Are they powered by the circuit board? I know my '67 B-body ones are. They are just the little plastic pieces that twist into the board. It's possible he just didn't like the inside signals and pulled them out.
Daily: '19 Frontier 4WD Belle: '67 Belvedere Convertible, 318/727 in Go ManGo! Other: '64 C10, 283/3 on the tree