In the first picture, the module with the two green wires is the brake light switch. The second picture with the white module and yellow connector is the chime module, the three empty spots are supposed to be there. In the same picture the green wire with the reddish connector does not look like it belongs there, it is an aftermarket connector. In the third picture the module above the gas pedal is the windshield wiper control module.
I posted pics of my owners manuel with the fuse locations and what each fuse is for, if you click on my username and look through my posted messages you can see it, I don't know how to put a link in here for it.
I own the same year and model Aerostar so most things should be the same unless you options that I do not.
Brooklyn Bay has some Ford software but I don't know if he has wiring diagrams, my Chiltons manuel is of little help.
I hope this helps.