Whenever I have done a job like this the important aspects are getting comfortable (a garden kneeler makes a difference) and making sure the light to work by is good. Also, have the right screwdrivers to hand, take a photo before you disconnect anything and keep the diagram within easy reach. If you are in the Caravan Club the wiring diagram(s) is in the Members' Handbook. If you can wire a domestic 3-pin plug you should be able to do this; it just takes a bit longer. If you are red/green colour blind - and quite a few people are - ask someone to confirm the connections before you finish.
2015 2.2 CDTi SENav 163ps manual 4x4 in Carbon Flash with 19\" alloy spare towing a Bailey Unicorn III Madrid @ 1500kg.