There will be an 8 way switch on the transmitter, which selects the item to be controlled, and a toggle switch to turn the item on or off.
I started thinking of things which could be switched and which were not already controlled by one of Mark's modules and found I quickly ran out of ideas


Here's what I've come up with so far:
Internal lights
External lights - separate headlights and convoy lights ?
Smoke system heating element
Animatronic figures - maybe on separate circuits ?
MP3 player and amplifier for radio chatter
What else could be fitted and controlled in this manner ?
I know we've had various people producing things like shell ejection and hatch opening, but these would require a whole load of other mechanicals as well.
Adrian.