Installation Notebook:
Sound Installed in Bachmann 2-10-0 Decapod
The 820090 has been discontinued. This install has been left on the site for historical information. Currently Bruce recommends an 826102 Tsunami decoder and SP-20R-08 speaker and SP-20R-GAS with some 9515 Styrene to build the speaker mount.
Identify all the wires connecting to Bachmann's board. Remove the board and hard-wire the Tsunami.

Here is the original text:
One of the easiest sound installs. Step by step directions from Soundtraxx
lead you every step through this installation. The 820090 is a complete
kit including the board, speaker, and baffle parts, etc.
This decoder is the only one in the DSD-LC series which includes support for a chuff cam and “keep alive” capacitor as shown below.
