Here is reply from a Dekco-Remy site....
Never heard of a polarity reversing switch on a CMP but engine in CMP frame was not original 216.......
Thanks guys.
Posted 5 hours ago
1941-1942 Chevrolet 216. Those years had a reversing switch that changed polarity to the points each time the starter foot pedal was activated. The theory was to prolong point life. After frequent failures the switch was bypassed with a dedicated ground to the plate terminal. Note that points with a different part number are used in that distributor. 7L2 is probably the date code. December (L) 7, 1942
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Bob Carriere....B.T.B
C15a Cab 11
Hammond, Ontario
Canada
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