Z28isTheWay

I have a '94 LT1that I picked up for $1300. It was not running untilI dropped a new pump in it. It ran for a few weeks and then died. I replaced the Opti, Ign. Coil, Ign. Module, and Plugs/Wires. The car is just cranking. The fuel pump was priming at one point, but not anymore. The pump is not getting any voltage. The car had an after-market alarm thats been removed. I went to check the FP Relay and it turs out that it never had one??? Someone please make sense of this to me. I know some F-Bodys ran secondary voltage, to the pump, through the oil pressure switch but mine does not appear to have that function. Ironically my oil pressure light was on the last time I drove it. HELP!!!