I just got a great deal on a Soundtraxx DSD-AT100LC sound decoder for my FA1 with a 1" speaker. The model # is 820042. I was wondering if anyone might know where I can find installation instructions for this particular model, it is the second release from life like/proto 2000. The board would have to be swapped out, it is not plug and play as that would be too easy.
I don’t know of specific installation instructions for that decoder in the Proto 2000 FA1, but here’s some info that might be helpful.
The wiring info for the decoder can be found here:
http://www.litchfieldstation.com/lobby/u_dsdLC.htm
Soundtraxx makes a baffle for this loco for a 28mm (1.1") speaker, 810100:
https://www.litchfieldstation.com/xcart/product.php?productid=678810100&cat=95&page=2