Vacuum to Electric Wiper conversion help

[1969AMX]

I was curious if anyone here knows the correct wiring configuration for the electric wiper motor/switch for a 1969 AMX?

Looking at the wiper switch;

I can assume that the L connectors coming from the wiper motor (with red/yellow and black/blue wire combinations) would go to the following terminal groups...

F1
F2

A
P

I'm not sure which L connector goes with which group though.

As for the other two terminals... B and W; I can assume that B connects with the brown wire (of the wiring harness), but what is the W for?? I have researched the 1969 AMC AMX Technical Service Manual for my AMX and I cannot find good information for the electric wiper motor/switch other than it's relationship with the brown wire of the wiring harness.