righty, what i did was:
bought a petrol one off ebay, fried the pcb control board, binned it.
then i went to the scrap yard, bought a s/hand one off a rover 75 doozel.
these come with integral circ pump.
get the wiring loom from
carmedia it aint cheap but if you fry the pcb its 230 quid for a new un.
buy a dosing pump (fuel pump) these should also be obtainable from a rover 75.
buy a webasto 1533 timer and one of
these
wire it up like this on the 1533 timer, 3rd pic:
DISCO3.CO.UK - View topic - Webasto Heater operated by phone
the one there is a gsm remote so you can phone it. 129 quid on ebay.
then lob it all together in the car, the pipes and exhaust you will just have to figure out for each vehicle.
i have wiring diagrams and some other info but its freely available on google!!!
any Q's???