52 Ted,No CRS has not set in :p
Our 61 American LaFrance had that same switch in it till just before it was "retired in 86.
As I remember,some Bozo broke the handle off gettin out of the cab.
No parts could be had easily and nobody then thought about makin it a Parade/Funeral Piece.
They just stuffed a Signalsat on it.
Regards Steve sr.