Ian,
Here are three photos of the inside of mine. The two circuit boards on the left are a Voltage regulator and a latching switch for the LED lights. On the right is a home made fuse board. At the moment the ESC is mounted is mounted on the hull side. There is no fuse between the motor and ESC as the ESC is rated at about 50A, and the motor stall current is about 2A. This may change as I plan to replace the Fleet Rx and ESC over the winter. I mounted the Rx on a shelf to ease access for crystal changing. Switch on the left is for the lights - off, switched , on. Right switch is main battery switch.
(Floating blue plug is from the RX battery - never got around to fitting a switch!)
Hope this helps.
Barrie