I measured out a scale mile on my ho scale layout how would I calculate the speed?

Hi.
I'd put a Soundtraxx TSU-2200 in it.
I'd hardwire it inside the tender.
I've done several of my On30 locomotives that way.
If you can follow a wiring diagram, and know how to solder, then it's a pretty easy job.
The tender should have a built in speaker enclosure in it.
You just need to figure out which speaker fits your tender best.
I use a Soundtraxx 28mm 8ohm 2 watt speaker such as this one currently available on Ebay:
https://www.ebay.com/itm/402411693475?
This should fit your tender.
As far as the missing parts are concerned:
If they're not available on this website, then your best hope will be Ebay.
Good luck!
Mike

Once again. still no sign of Sir Handel just yet, but they did tease an unpainted sample of Stanley, which will be shown in the August Trainworld Stream in like three weeks. They managed to get Stanley ready before Sir Handel, who was announced long before.

They just recently got unpainted samples of the Narrow Gauge High Side Wagon and Stanley. Other products awaiting unpainted samples include not just Sir Handel, but also the Narrow Gauge Gondola, Gunpowder Wagon, Duncan, the HO Scale Open Carriage, Bulgy, N Scale Diesel/Paxton and the Express Coaches. It's going to be a while before we hear progress on Duncan or the Gunpowder Wagons. The N Scale Express Coaches are still not up for preorder.

Re Lighting for Bachmann 4-6-0 PNP
It appears that the lamps are incandescent.

I've installed a Blunami 2200 on the Large Scale 4-6-0 PNP with Battery power, and I finally have the lights working.

In the app, set Lamp type to Incandescent.

Connect the Blunami Blue, white, and yellow wires to the corresponding J1 pins in as normal.

ALSO connect (jumper) the black wire of Blunami  (also connected to J1-1&2 as normal) to J1-7.

This accomplishes what the 4-6-0 instructions mean by connecting the decoder negative output to J1-7.

I also connected J2-10 (firebox flicker) to the white wire (jumper to J1-6), so the firebox goes on with the front headlight;
presumably you could use a separate function for this if you wish.

I posted the full details for installing the 2200 to this topic:
Blunami 2200 for Large Scale 4-6-0 PNP

Made a few more.

Full container of branches to glue on.

This is what i started with..

They were dead branches from my Katoni Aster shrub from the front of the house So yes they were Allred y dried.

I have a scale marked out on the bench in tape so i can keep them between 20 and 50 scale feet tall.

What kind of 'real' tree branches are you using?  They look great
and in 'scale'.

Ken