I took the BlueRail board out of my Williams semi-scale 4-6-2 and installed it in my G-scale Bachmann 4-6-0 Annie, along with the GEMS speaker circuit board (and a 5v voltage regulator,P/N 7805, the last digit denotes the voltage!!!). Here's the wiring diagram:
I'm going to redo the diagram to make it easier to read. So far it's working great, pulling a tankcar, flatcar, and caboose. 12v 2000Mah NimH battery is used and the original Bachmann 3" 4ohm, 3watt speaker. I have a 4-pin plug going from the tender to the boiler for the motor and headlight LED leads (need to make a diagram of that too). The rear light is in the tender with a mini-plug so I can unplug it when I take the shell off. The on/off switch and charging jack are mounted on the bottom of the tender, easy to get to.
The sound is generated from the BlueRail app on my Ipad and not thru their board. Once the GEMS onboard speaker pairs up with the Ipad, the sound comes out of the onboard speaker vice the Ipad speakers.
