Series 8 Airbag Diagnostics Module
 

I have a 2000 RB Series 8, with airbag light constantly on. Started out as intermittent (would not go off after startup for 1 - 2 minutes), now just constantly on. Apparently it's the diagnostics module, which have a weakness in them - from what I've found on the web. Question - where is the module located on a Jap import 2000 RX7? I've read it's on the LHS of the trans tunnel, RH Kick plate, Under the radio, under the centre console - can't seem to actually find it in any of these places. Help?