I think my fuel pump is from a 2004 Z06 corvette.

1. There are 4 pins. What is the required input for each and what is each pin used for? I am guessing A and D are power and ground.
2. Will my car run with nothing plugged in to the 3 pin connector on top of the fuel tank (should be level / pressure sensor)?
3. Does the connector for these 2 items usually come from the main engine harness (the one with the Throttle, alternator etc)?

THANKS!!!