Carbureted Caprice diag codes

[Len Sabatine]

    If nothing else, you should see a code "12 " , distributor reference in 
a properly
    functioning system. If the SES bulb isn't functional , there's no data 
stream to
    monitor.
    Len

>Anyone have any ideas on how to flash the diagnostic codes on a
>carbureted 305 Caprice, around 87 to 88 vintage?
>
>I attempted the standard method - key off, short terminals "A" and "B"
>(the two in the upper most right as facing the connector), then key
>"on", but that failed to yield any codes.
>
>Thanks
>Gabe
>
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