2822963 wiper motor 2 speed park bench test

I know these motors made it into A bodies as well.
Yes they did.
There is a list floating around the internet that shows them for '66 - so maybe '66 B bodies ? and if so maybe in a 66 FSM.

Reported here that these were made by Leece Neville Wiper motors on 67-68 barracudas

Skim through this thread where we identify four '67 a body wiper moter & switch variations and the wiring
https://www.forabodiesonly.com/mopar/threads/wiper-motor-wires.425520/post-1972354163
and this one Wiper Motor Interchange List with part numbers/years/body styles...

This is the wiring on my '67 with the two speed switch. Switch with numbers pictured here

Blue is probably Park function because its on the gear and therefore has the switch plate.
So maybe Brown is power in and red and blue are returns.

Connections here if that's of any help.