Another Oil Pressure Gauge Thread, but not what you'd think

[Boosted87Supra]

1. Cluster should be USDM, is there a part/serial # I can check to be sure?
2. So the wire goes from the sensor to the ECU/PCM and the gauge...interesting. So do you know what pin on the PCM connector it is? Also how does it go to both, i.e. is it one wire from the sensor that splices/splits somewhere in the engine bay? Or is the splice somewhere under the dash?

Thanks