Pretty sure this harness, module & fuse block are only needed for the now removed auxiliary heater. A couple wires that are in the same bundle that I wont delete, that do not connect to only the heater & controls. I'm only referring to the silver module & fuse block mounted to the heater box & wiring from them to the Webasto heater & controller. I don't see this confusing mess in any other 200tdi pics I've looked up. I'll wait till this weekend to pull these wires, so stop me if I am messing up!