I replaced the oil pressure switch with a 150 PSI oil pressure sensor.
The oil pressure sensor is connected to our "Bluetooth Sensor Server" and sends the oil pressure values to our LCD gauges / mini-dash.
The Bluetooth Sensor Server supports up to 8 analog inputs. Right now it sends oil pressure, fuel pressure, manual transmission oil temp and differential oil temp.
The LCD gauges / mini-dash is connected to the vehicle CAN bus to get engine RPM, engine oil temp and 30+ other items.
Bluetooth Sensor Server Overview:
https://youtu.be/U_kH3K_C2AE
Mini-dash / LCD Gauges Overview:
https://youtu.be/lndZiRxDNOo