RC
This is all the electronics under the bonnet, the long thin yellow item is the Li-Po battery 11.1v 2350mah held in place by the cotton real and the silver smoke unit. To the left is the Bendini sound unit, connecting to a volume control (middle left) which connects to the two X-mini speakers, these are powered from the USB sockets (bottom left), to the right of the sockets is a 12v to 5v DC-DC converter which can be switch on-off using the left most toggle switch, the middle toggle switch is for the smoke unit and the right hand brass toggle switch is the main on-off, above it you can see the Dimension Engineering dual motor speed controller, above that is the 2.4Ghz Frsky 4ch receiver (I am only using 2 channels in this vehicle) next to it (top right) is the special steering mixer which is similar to the one for the Kettenkrad, it is designed to keep the inside track running when turning the vehicle to stop the track coming off.
Along the engine bulkhead are some Y leads, because I needed so many connections to the circuits it was better to make a central splitter circuit board rather than use 4 Y leads on both the steering & throttle channels. On the left of the bulkhead is the fan speed controller for the smoke unit.