Truma Ultraheat Retrofit Installation Instructions (fully integrated Hobby Caravan CI Bus control)

In this video I am retrofitting a Truma Ultraheat to the existing Truma 5004 Gas Fire. By fitting a Toptron CI Bus module (as used by Hobby in the factory), I can seamlessly integrate the controls into the TFT display. Part Numbers: 6121930012: CI Bus Cable 6420500106: 2 Plug Socket 6430210087: Crimp plugs for the socket Supplied from Campingplus.de (not an affiliated link)