I recently purchased a sound value EMD GP35 and would like to turn on the auto sounds for direction and grade crossing, but I am unable to find what cv's control these functions and what values to put in.  I have the full sheet of cv's for this engine, but it is still confusing as to what cv's to change.

The file for using JMRI decoder pro is not available for this engine and Bachmann only recommends the use of approved NMRA systems for changing cv's on their products.  Any help would be appreciated.