Right, Ive rpelaced both front air struts and after a bit of playing around, worked out the compressor had burned itself out at the same time (Im assuming). Initially I refurbed the compressor and drying granules as per the common video on YouTube, still nothing. sourced new internals for the compressor housing (new motor and drying cylinder etc), fitted it, cleared all faults (only one that remained on anything was a CAN bus error)

Turned the RR on, hear the compressor start vibrating away, done full lock left/right to clear the 'air susp inact' on the dash and it started raising slowly. I panicked a bit as had read you cant let the compressor run for too long (cant remember the time quoted, 60 secs, or 90 secs maybe?) so hopped out, turned the car off and it was still running?

In the end i pulled the relay in the boot to save the compressor

Should I of let it run longer? The car has raised slightly, but not to full ride height as yet

Any advice please guys??

I am no expert but I would have thought if the system had no air in following the work you have done it needs to be charged up , i.e. Fill the air tank and air bags so I would think that may take a few minutes , I've never heard of only running the compressor 60/90 seconds the compressor runs when the pressure is low and stops starts when required