Caravan electrics

My 2004 Golf Outback had a fuse block at the front of van for lights,brakes etc. as does my current van a 2016 Evenew so would not hurt to put them in IMHO mickb

Although deemed unnecessary to have fuses at the front of the van, it can be an advantage with fuses smaller amp ratin gthan the vehicle supply for each line of supply.
The reason is, with a van a fuse at the front ie, just after the caravan 7 pin plug, will provide a really easy way to find any fault because if the vehicle fuse blows on that line then the fuse is blown, but the caravan isn't blown. So fault is forward of van.
If caravan fuse is blown then you know the fault is rear of the vehicle and sited in the caravan on that particular line.

If tracing faults with fuses, have a fuse (BLOWN) and solder a wire to each side of the blades. fit a globe with wattage approx same as the lights to be supplied and plug it in. First to the vehicle, then the trailer.
If the globe is bright, then fault remains.
If globe is dim, then the lights will also be dim and the fault has been fixed.
With LED lights the globe will not necessarily illuminate fully, but the LEDS will, so you then know there is no fault with the circuit. Far better than a multimeter tracing, which cannot do what the globe does.

I carry such a fuse/wire/globe always.

Hope this makes sense for you.