Thanks Jeffery,  I've too many turnout to start retiring them, but it never occurred to me to power up the tender, good idea.   I'll give it a check. Thanks

I'm attempting to install a TCS KA2 in an older Bachmann 0-6-0 with a factory DCC board, which surprisingly runs pretty good.  My issue is identifying in correct soldering points for the KA blue and white-black wire.
I know most instructions say solder to the blue and brown wires or use the wires off of the bridge rectifier which I haven't a clue on how to ID it.  Any help from the images I provide for the correct solder points? In this case the blue wire is for the on/off switch for the smoke unit. So no help there.
There is some nice discussion about adding KA's and sound board in the forums, but most are 10 years old or so. Images provided in these threads are gone.
Any help here?
Thanks. Don