Should ALWAYS disconnect battery FIRST when messing with airbag devices/connections.

1) They can kill/hurt you badly if you're too close
2) You'll avoid any lights coming up on the dash!!

If you're local to Solihull/Redditch, I can probably turn the light off for you.

Failing that, maybe buy a car reader (U280, if I remember correctly) off of eBay for about £15 + P&P. (Very handy tool to have for diagnosing problems & clearing fault codes etc.).
