Now, I'm trying to find the optimum layout for all the electrical gizmos. Given the unique interior of a scratch build job, planning the positions of wires and bits can take a fair bit of thought. Apart from the headlights and gearboxes, which are already installed, I though I'd begin with the basics: the On/Off Switch and the Volume control pan pot.
The engine hatch is openable (could still make
all hatches openable...but that's for the future), and so this looks like an ideal place to plonk the switches.
First, I cut a plate out of 3mm styrene, and began making apertures for the switch and vol control. The battery cable also includes a remote charging port, and I may fit this here later too... I'm not phased by charging NIMH batteries in situ. If I graduate to LiPo, it might well be a different matter...

- Power switch installation bits
Just to mention, at this point, to anyone contemplating a scratch build or to those newbies with lots of enthusiasm, and no tools- these are the budget tools I've used, and found indispensable:
Exacto saw; Trumpeter Mini Razor saw; Pin vice (cheap, but brilliant); Faithfull (sic) Engineer's small set squares; Safety cutting ruler; Tamiya scriber and a set of mini woodworker's sculpting chisels...

- Cutting aperture for switch

- Switch fits nicely

- Same procedure for Vol pan pot pic D
Next, I clipped the cables in place so they won't foul the gearbox teeth

, and cut two dovetails for mounting the plate onto (dovetail) supports I'd bonded into the hull..

- Switch Plate ready for fitting
Here's what the plate will lock into..something I made earlier:

- Dovetail fitting system for easy removal

- Power switch and Vol control in screwless fitting

- Power switch in place
Now, I have to see whether the Asiatam/Taigen recoil and elevation unit can be shoehorned into the compact Cromwell Turret. I note that Tom's model has the entire turret roof as a detachable fixture. I had bonded the rear part of mine, as per Ludwig build details. With hindsight, I might have deferred that stage until the gun components had been installed. Even now, I'm considering trying the Clark Universal recoil instead of the Asiatam one. For this reason, I'll wait to receive that unit, for comparison purposes, before fitting a unit finally in situ... Hmm, well, as you can see, I managed to get the bulk of the recoil unit in there..

- Mighty tight squeeze