Through ebay (where else) I purchased a diesel heater to make life with veggie oil easier in the winter months.
It turns out to be an add on to a citroen, so a lot of the instructions are in French, particularly the wiring diagram.
The electrics are actually very simple, a relay is driven off a "boitier prechauffage" (pre heater?) and that relay livens up the heater. The heater has a thermostat that shuts off when a temperature above 10 degC is reached.
I plan to place the heater in the diesel line, prior to the filter. The electrics I plan to wire on a circuit that is live when the ignition is on. However, I reckon I need an override (to turn it off), so if I sit there at any time with the engine off and the ignition on I don't run down my battery (it is a 150W heater!)
So is there a better description of a "boitier prechauffage" and does my wiring proposal seem sensible?
Cheers
Peter