Update 2021 05 01:
Ok, we're functional. After all the outputs and terminals between the BR, Tsunami and accessories were double checked, I connected the battery and flipped the switch...
And things started happening! I was able to wipe my iPad from 10 years ago and installed the BR app. After booting up, the app found my board without any problems, and she came alive!
Also got the Super-Chuffer and the chuff-generator installed and calibrated, although I have no way to check it yet since I'm waiting for a relay to compete my smoke circuit. I don't have any input voltage to the "Smoke In" pin on the chuffer, but strangely the smoke motor runs constantly even without the prompt. Still gotta troubleshoot that, so I just disconnected the smoke motor for the time being.
As I was experimenting with outputs and features (firebox flicker! Cool! Dimmable LED headlight! Cool! Different whistles! Cool!), I came upon an unfortunate but not totally unexpected realization: my Tsunami2 4400 appears to be part of a bad batch that has a defective current protection circuit.
As I throttled up, all of a sudden the motor quit and all the the lights flashed. This happened a couple times in rapid succession, then everything just stopped.
To make sure I wasn't jamming anything and drawing too much current, I hooked up the Fluke and replicated the issue manually. Sure enough, the circuit protection kicks in at just over 1.4-1.5 amps, instead of 4 amps which the board is rated for.
Soundtraxx told me this might happen, and that they're working on it but don't have a solution as of a couple weeks ago. I've ring their bell again with the attached video. Will let y'all know if I hear back.
I will say, the sounds and features are pretty awesome as they work!
