Airbag help..

On my '92 Mustang the Air bag light has come on..
It flashes like so..

Flash-- Flash-----Pause----- Flash---- Repeat..

Can anyone help? Not the Clock spring and it took it to the dealer.. They said they might be able to fix it for $800.. I said no thanks..

Any help would be GREAT!!

Thanks,
Ryan
 
Code 21 is for the LH B Pillar Sensor but the Diagnostic Monitor is usually the culprit of that Code, you will need to snag one from a 1992 or 1993 only as that is what will work with your Car, its not too bad to swap out.
 
Looks like there are two fuses 7 & 18. A blown fuse 7 will generate a code 12 as will any other loss of power to the diagnostic monitor. Either the diagnostic monitor is not getting power or it is bad.