There were three different light switch assemblies A-11654. The first was used only on the early 28 cars, the second through 1930, and the last 1930 to end of production. There was a minor variation, (removal of ' dimples ')of the second style assembly. The light switch cover with the 'flat' spot around the drain hole is not a Model A cover. All Model A covers were round as shown. For details of the differences and dates of change see the Judging standards.
EARLY 1928
MID 1928 THRU 1929
1930 THROUGH END OF PROCUCTION
A-11654-A
NO BAIL NEEDED
A-11654-B
DIMPLES REMOVED AND THREE POSITION SWITCH PLATE STARTED WHEN TWOLITE HEADLIGHTS INTRODUCED IN EARLY 1929
A-11654-C
LIGHT SWITCH COVER WAS LENGTHENED WITH CORESPONDING LENGTHING OF THE BAIL IN 1930
