So, I replaced my SDM unit with a second hand one. Was the wrong model number. - The original unit got too well acquainted with a coffee and died... Got another one, with the correct number (checked against my VIN with both the seller and an Opel main dealer, both said the model would be...

Hi W reg Astra Mk 4 hatchback, W63 LNU, 16valve 1600cc engine. Delphi. When I turn on the ignition the airbag warning light comes on for the multi instrument check, then goes off for a second, then comes on permanently . I have had the car six years, it started doing this intermittently...