Plug-n-Play decoder, non-Plug-n-Play Loco?

[rrinker]

Traffic is a bit light on The Reading Modeler, but there are definitely people there who know their stuff. "Tooling" is a director at the RCT&HS and in charge of all the motive power the society owns. If it's own a Reading locomotive, he probably knows it. Of course, we don't have any S-2's... Did you put it in the modeling section of the prototype section? I suppose there are some people who don't read both even though it's often days between posts. Or maybe people just like RS-3's better - if you saw the two threads on those, you'll see there were tons of information provided in both the model and prototype sections.
Everything I can find points to the horn being a Leslie Typhon A200, but I can't find anything that specifically says "Reading S-2s came equipped with".

--Randy