Good evening, gentlemen.
As the winter has finally arrived, I had an idea to retrofit my 2002 S40 1.9d with a coolant heater.
I did some research and discovered that there where coolant heaters installed on S/V40s with chassis numbers bellow 839034 (item 36) and the used spares with those seem to come from year 2000 and 2001 cars.
It would be fitted on the left side by the steering rack. The two hoses seem to fit where one of my heater core hoses would fit. The wires seem to be integrated in one of the harnesses.
It would not be an issue for me to jerry rig a power supply since it would not fit into my harness and (not to flex) in an engineer by trait. But I have no information on how they are fed - none of the wiring diagrams seem to have anything on them, no instructions on replacement or use or anything out there.