Very cool. I like pictures like this, they definitely say a 1000 words.
And as I have stated on my Narrow gauge engine shops thread, and elsewhere, added electrical pick up is the easiest and cheapest way to improve most old models, and some modern ones.
ideally you want pick up from all the drivers, and all the tender wheels (the trailing and leading wheels are trickier, and any drag can cause them to be more prone to derail, so I generally leave them alone)
a small square or rectangle of Pcb (printed circuit board ) is glued to the cover plate. or elsewhere on the frame with JB quick (5 minute steel filled epoxy) the phosphor bronze wire (available from Micro mark, and shipped in Tichy train group modern cars as brake line (that I leave off, cause I'm lazy), is bent to shape, soldered to the pad, and tweaked until good wheel contact is made, tested on the ohm setting of a mutimeter. solder a wire on, and boom, you have electrical pick up on the insulated side. I have even done this on the ground side of old brass, to get the power into a wire quick, as often old brass does not conduct electricity well across joints, and a thorough cleaning might damage the paint job.
I used to be able to get blank PCB at radio shack, now they Just sell cell phones, and they look at you like you have antennae coming out of your head if you ask for blank PCB board, or a thee pole three position rotary switch. Clover house sells PCB ties, and I might have to start using those, when I run my current supply down,
next to rebuild two tender's electrical pick up ;maybe three there is that ancient and honorable porter mogul on my work bench, my Mom wouldn't let me play with it when I was eleven, my now it is mine Muha ha ha haaa!
Bill Nelson