If your vehicle is made post-2002 then the wiring loom will connect straight away. If you are putting the door on an earlier vehicle, it will require a bit of fiddling because the connectors are different and the newer door's wiper is negative switched whilst the older door's wiper is positive switched....
I hate filling the gearbox. The transfer box is not so bad, but the gearbox (both the LT77 and R380) is annoying to fill as there is hardly any space to get above the filler hole to pour the oil in....
An expedition Land Rover needn't be an overly expensive beast. The stock version of the Defender performs very well in harsh environments, but a few select additions can turn the well designed Defender into a more reliable and useful vehicle. You could go all the way with modifications to make sure there is a piece of equipment added for every eventuality, but if you're on a budget (as most of us are), what are the most important additions to your Land Rover to get the most from your expedition?...
Wheel bearings have the habit of wearing out on expedition. The constant driving with dust and water creates a testing environment for your hub seals, so it is not uncommon to have a dodgy bearing or two on expedition. I think it's one of the mechanical things that is so crucial and fairly straightforward to fix, that it's worth getting some practice of it before you leave on expedition....
