I know I have only 2 heater plugs from readings at the fuse holders and I have 220k across the temp sensor ( 2.7 320 2009) and it starts not too bad in these milder winters.

BUT if the diesel heater could be brought on say 20 min before starting without the use of some expensive remote control that would suite me .
So anybody got a good wiring diagram ...I know it needs ignition feed and something to bypass the thermostat so any information out there ? Always listen to old people or when they die you will live on in ignorance.
The avatar is a picture of the man with a big cock.
Learned to 4x4 on 100 mile beach and Frazer Island QLD
Dont spend money on old cars you will never get it back

To start the heater you have to send some commands across a wbus.

You used to be able to get them for €40

This seams to be the equivalent now.

https://www.ebay.co.uk/itm/124147753763?mk...media=COPY

For a bit more you can have a remote