Hi ExtraGame
do NOT hurry to fumble on the Switch "motor-1A" --- FIRST answer the question: Do You get ??? Number-Match-Replays (at end of a game a number 00 or 10 or 20 ... or 80 or 90 will be lighted --- if You have the same on Your counter: You get an Number-Match-Replay --- see here http://www.ipdb.org/showpic.pl?id=2&picno=34788 on the right all these numbers --- here http://www.ipdb.org/showpic.pl?id=2&picno=68449 when end of the game and the "00" on the backglass would be lit: Number-Match-Replay).

See the JPG in leckmeck 's post-4, towards the right, highlighted yellow: motor-1A !!! is also used (with an switch closed on pulling O-Relay) to give You an Number-Match-Replay (through Tens-Unit and F-Relay-Disc).
IF (if, if) You DO GET Number-Match-Replays we can clue "motor-1A is good. Greetings Rolf