How to repair a Truma US103 850w Caravan Water Heater

Task: replace the heating element. Replacement part kit: 70020-00270 from: https://www.ebay.co.uk/str/jacksonsle... Price £100-£120 (2022) Tools: Sockets/spanner 7mm & 5.5mm Small pipe-wrench (for quick-fit) Wire-cutters Choc-box to reconnect the wired 5-Amp fuse (1-inch)