GM/Delco Hy-power brake booster

[Campbel45]

Could anyone help me out on which brake port goes where? Forgot to take a look when I pulled this unit.

Also if you have a wiring diagram for what sets off the electric motor, that would be very helpful. I'm guessing its very similar to the hydromax units... In that:

#1. ign off, brake pressed - electric motor runs
#2. ign on, power steering no flow - electric motor runs
#3. ign on, brake fluid no pressure - electric motor runs

https://imgur.com/a/BvCQb9w