Security systems comes in many variations and some of them do cut off the fuel pump but I do not think that is the cause.
It is most likely a wiring problem and what you need to do is check/test the fuel pump circuit. At the fuel pump relay, check for presence of battery voltage and try bypassing the relay to see if the fuel pump works if battery voltage is available.
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Friday, November 13th, 2015 AT 7:00 AM