Had elec fuel pump hooked upto ignition start. im guessing for a ground cuz it keeps braking fuse. that may have been hooked to blinker fuse spot too. so... i installed a toggle switch. hood to battery and ground and to pump in all right spots. and it worka. i turn on switch for pump and start her up. a 455. but now. i turn off pump to kill car and turn keys off... shes still running. i hae to jus let her putter out to turn off haha any ideas? car is

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1969 buick skylark gs. but has a 455 in it