This has been a very interesting read - I wish more people would be honest about what has gone wrong in their vehicles as it helps all the people who are building their own. I take on board all comments about my design choices on my thread, whilst sometime it is difficult to admit making a mistake, it is a lot better than finding out I was wrong in the middle of the desert or Siberia
I've tried on mine to ensure everything will survive a round the world trip, and although many of the things I have done can be described as overkill, I hope the won't break down and leave us stranded in Siberia as we won't have the benefit of getting the great customer service that GXV have shown. I will only be able to blame myself
Some very good tips about labels and wiring - I know that I did not label all the wires on my build properly. I thought that writing the circuit name on the wire would be good enough - but then after fitting the wires I found I have cut the names off. Luckily I have not finished everything and it only took a few hours to trace each wire back to the control panel and put some more labels on them. It is surprising how you forget what each wire you installed was for after a year. After reading this thread and looking at the wiring I decided to get some proper labels and label everything, and also make a decent wiring diagram and have it laminated and stuck into the back of the main switch board.
There have been some great lessons learnt on various threads. After reading about plumbing failure I went back and fitted the proper inserts in each pipe at each connection, and also fitted the locking clips to all of my hot and cold water piping - easy to do since I also decided to make all my plumbing is fully accessible - none of it is mounted behind glued in cabinets. I have seen plumbing failure numerous times on various camper threads. The total cost was around $50, and about two evenings work to undo and redo each connection.
The other common failure is water tanks - loads of people have built in water tanks, often stainless steel and after a year or two have to rip up floors or remove camper off the chassis to fix a leaking tank. After seeing that happen so often, I made sure my water tanks are independent, and can be removed from the truck fairly easily.
The other thing is a proper vermin proof floor - last thing I need is a mouse plague in the lining of my truck. Hopefully mice won't chew through 2mm of aluminium.
I probably have a lot to learn about really cold weather - kind of difficult to find the right stuff here in Australia, but I think I've done enough insulation wise.
Last thing is weight - so many camper trucks as massively heavy and that leads to failures. I have tried as best I can to minimise the weight, and all going well I should have a fair bit of carrying capacity left. I plan to weight the Unimog next month as it will almost be finished as far as gear installation is concerned, and I will also check the weight of my Land Rover before heading off on our next adventure.