After having connected up most of the 12 v circuits, I needed a way of switching them.
A couple of circuits were sent to the front of the vehicle to be switched from the Centre Console – for example, one of the rear lights for reversing and an on/off for the water heater. I also needed a place for the control panel for the Votronic DC to DC charger.
I could not find anything off the shelf, so in the end measured up and sourced a black adaptable box in the correct size. Mud Stuff sell a panel for Carling Switches, so I got that and 6 switches to install in the box.
Preparing the Adaptable Box 
Getting the cables to the box
Bringing the wires to the box position was straightforward, a couple were a bit short and needed lenghtening. At this stage making careful notes of the colours for each circuit.
Connecting the switches 
Completed Job
I left a bit of space, as I knew I would need a location for a water level guage and the control panel for the heater at a later date.
A similar wiring job was carried out in the front, adding circuits for the alarm, water heater, rear reversing light, fuel transfer between tanks, heater, a USB Charger and a spare!
The LED for the Alarm was added in the same location.
Centre Console Switches 
Centre Console and Sub Woofer below.
Another job done, although it did take a couple of days to get it all working correctly.
48 States of Gray 