just as the sub says i got the car working and whatnot, but it dosent have the oil pressure/sender switch hole above the oil filter. so i was going to use a standard oil pressure sensor like most would be i have that weird plug that plugged into the switch and i dont know which one goes to the gauge. i tried to put a bare wire that is hooked to the oil pressure sensor on the top, into all three holes with no luck and i heard this also has something to do with the fuel pump also?

 

one wire goes to the gauge, the other comes from a switched 12 volt source (ignition) and the third goes to the fuel pump (fuel pump is only on for a few seconds when key is turned and then stays on if there is oil pressure)