I'm looking for a schematic that shows the plumbing for the vacuum lines on the F6 2 speed differential. I would appreciate any help, thanks

 

Some info here, but not what you are looking for:

https://www.ford-trucks.com/forums/7...peed-diff.html

Seems conversion to electric shift is possible according to a couple posts there. Not sure.

Do you have the vacuum pot on the axle and the shift **** in the cab?

See post 10:

https://www.ford-trucks.com/forums/1...-problems.html

The spring pulls it back to low, the vacuum holds it in high. That might be a clue as to how to plumb it.