How to Bench Test Wiper Motor?
I think the Blue is the Park function and that's why its hot when the switch is off.
If so, then the switch plate breaks contact when the wipers are near the bottom of the windshield.
Then Brown is full system power (High)
Red is reduced system power (Low)
Work in Progress
This says A to F always connected, but sortof a complicated way of explaining power gets connected to A & F when the switch is on.
B/U is back up lamps so they are always hot with the key in run or acces.
This guy agrees and explains it better
https://www.forabodiesonly.com/mopar/threads/testing-a-wiper-motor.247294/post-1970113649