I ran across a post where a gentleman wanted to run an Mth Protosound 2 Engine using his old ZW transformer. The horn/whistle button works but he has no bell button. Aside from purchasing a new transformer what is the bell signal? A whistle signal is just a DC pulse . It sounds like an interesting way to use the old with the new. MTH didn't have an electrial diagram to their transformers.
Does the ZA transformer use Pulse Modulated Power or is it variable DC?
Edit: My mistake. I read BLI and not MTH. No wonder protosound 2 didn't sound famaliar. I now remember it's part of DCS by Mike Wolfe of MTH. I'm not an O-scaler though.
Mr. B is correct. Classic trains is your best bet.
Don - Specializing in layout DC->DCC conversions
Modeling C&O transition era and steel industries There's Nothing Like Big Steam!
This is one of those questions that will get a better response over on the Classic Toy Trains forum. Not that we're exclusive or anything, buy you'll find far more O-gaugers over there.
It takes an iron man to play with a toy iron horse.
Thank you and Happy Railroading!