evaporator box '83 300sd some questions:

[WDBCB20]

First, a heartfelt thanks to members jbaj007, dmorrison, R Leo, westkill et al for so generously sharing their evaporator explorations.

First photo shows the view of a shot taken by inserting camera up the blower inlet inside evap. box facing the driver side. The far corner shows leaves on the evap. Second and third photo: is this the inlet where the leaves are getting in? How can it be accessed - removed to vacuum leaves out and perhaps install a screen?

Other than the opening at the blower, the opening where the leaves are, and the condensate drain, are there any other openings in the evap box? Is there an opening on the drivers side, if so where? Where is the condensate drain located under the car? I want to attempt a spray cleaning and wish to prevent soaking electronics back there.