help with troubleshooting ignition problems on 1994 odls cutlass sup.

May 30, 2006 4:29pm CST
I parked the car it was running fine when i went to to start it 5 min. later nothing. I cleaned and tightened the battery post even replaced ignition switch.still nothing. The security light is flashing.but wehn you turn the key the amp. gauge drops. can anyone help.
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