Oil pressure

My oil pressure guage has not worked since ive gotten my talon. the connector on the wire that connects to the sensor looked bad so i changed that and still nothing. im pretty sure it goes to the ecu but i have no idea which one it could be. i would much rather run a new one and resplice it at the computer if anyone knows which wire it would be.

It could also be the sending unit. I doubt just changing the wire would fix it unless the wire has been cut by something.