I tried it out. Works just like the video. Good job.

Here is a video running Williams locos on BlueRail on AC track

https://www.youtube.com/watch?v=tiWBG_vbKvw

Here is a video of Large Scale Thomas with a BlueRail board installed:

https://www.youtube.com/watch?v=XKeSmSyPAx4

Just to be clear, the APP doesn't pair with a speaker. You pair your phone/tablet with a speaker, which routes all sounds to the speaker (regardless of what APP you are running). Pairing is generally done from the Settings/Bluetooth area in your phone/tablet.  If you are having problems pairing your device to a bluetooth speaker, I would google "(name of device) can't pair bluetooth" and see what you find.

Glad you got it working. A transformer (Life-Like) would never have issues related to bluetooth. More likely it has issues related to amperage being drawn the moment the loco starts rolling.

Sounds like you started a thread about a loco that doesn't suit your needs.  But just so you know, there are plenty of devices that will run these trains, and a monthly service is not required. I see RCA voyagers are $42:

https://www.walmart.com/ip/RCA-Voyager-7-16GB-Tablet-Android-6.0-Marshmallow/53990885

https://www.walmart.com/ip/Samsung-Galaxy-Tab-E-Lite-with-WiFi-7.0-Touchscreen-Tablet-PC-Featuring-Android-4.4-KitKat-Operating-System/51077603

As for sound, lots of people put mini-bluetooth speakers in a trailing car for very cheap: http://bluerailtrains.com/2016/01/05/bluerail-trains-onboard-sound-for-10/

Best of luck.

There are 4 colored wires that lead to small circuit boards that power the lights on a Williams GP-30:  red, black, yellow, blue.

Can someone please tell me what sort of power runs through these 4 colored wires?

Is black ground? Is red Track voltage? What are blue and yellow?

Any help is appreciated.

Large Scale Thomas has 2 wires that lead to the motors (yellow and brown). Does anyone know which wire is positive and which wire is negative?

If you are experiencing a problem with E-Z App on iPod touch, you might want to contact BlueRail at support AT bluerailtrains dott com. Be sure to tell them which version of the iPod Touch you are using and what you are seeing.

Perfect. Thanks so much.

For the C-19, Bachmann includes a plug-in interface board which plugs into the 23 pin socket with many wires that you would use to connect to a DCC decoder. Does anyone have a list of which wires from here you would connect to a standard higher amperage NMRA DCC decoder?

I would appreciate it.

Does the C-19 have an NMRA 8-pin connection point for DCC decoders?

Thanks for that info. Very helpful. Does the C-19 have an NMRA 8-pin connection point for DCC decoders?

Can anyone give me the stall current and the slip current for a c-19?

Also, the promo video shows/describes a pigtail connector to allow connection to an "after market" sound system. Does anyone know what sound system are they referring to?

I am doing some tinkering with a Bachmann loco and have a couple questions: I notice if the loco doesn't receive a DCC packet for some certain period of time it switches to analog mode.

Is there any way to disable analog mode, or will this always happen?

Does anyone know how long a Bachmann loco will go without a packet before switching to analog mode?

Is this 'feature' limited to Bachmann DCC Locos, or do other decoders do this same thing?

Thank you