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I suspect the radio suppression relay. There should be two black relays down near the battery - not the resistor pack which you described in another post as what looked like a pack of ceramic fuses - but rather two squarish plastic relays. One of the two is the radio suppression relay and the other is the relay for the front cooling fan. Each of these relays has four wires connected to it - two large wires and two small wires.
The way the injectors work, they have positive power whenever the key is turned on - that power is supplied to them through the radio suppression relay. The fuel ecu signals for the injectors to fire by completing the ground side of the circuit. I'd suggest that you first remove the radio suppression relay and jumper the two larger wires going into the radio suppression relay together - this will bypass the relay. If the engine starts with these jumpered then the relay is the culprit. If so, you can drive the car with the jumper in but you can't leave the relay jumpered when you turn the car off or the battery will drain.
If the jumper doesn't make the car start then you want to put the ecu in the diagnostic mode and see if the injectors fire - you'll be able to hear them click if they do - check the FAQ's for the procedure to enter the diagnostic mode- you do it by putting the spade in port 2 of the OBD box - just like you do to read any CEL codes that have been set - but by holding the button in the right sequence you will enter the diagnostic mode.
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