How many using an A500 overdrive ?

With the A500-42h, would I have to do something like you did with pressure switches and toggles and such? Or could I install this tranny and have the overdrive and lockup work automatically without being switched on/off, etc?
I know my fathers 1990 Dodge van (not sure if it had the A500 or A518) Had an override switch ON/OFF on the dash to control the OD feature . He bought this van new in 1990.