From a previous post I read this bit of information.

DISPLAYING THE TROUBLE CODES
Run a wire/hairpin from Pin 6 to Pin 12 with the ignition off (although on later cars it should be from Pin 5 to Pin 6), then turning the ignition to the on position without starting the engine will flash the "Service Engine Soon" light in the following sequence: flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause flash, pause, flash-flash, long pause Following this "12" code repeating three times will come any trouble codes stored, flashing each of them three times. If you do not see the "12" flash three times, your diagnostic circuit is defective.
Some vehicles will display stored trouble codes, then "12" again, followed by energizing "most system controlled relays." The fuel pump relay will not energize. The idle air control valve will fully extend to enable checking minimum idle speed.


Can someone explain where the 12 will flash? I'm confused by how a 12 will flash.. Will the check engine light flash 12 times or something?? I'm lost..
someone help me!

Thanks
-Justin

 

the SES light will flash 12, actually it'll flash once for one then pause and flash twice for two pause and repete for a total of three times. when it's displayed all the stored codes it'll flash 12 again three times.