If your looking to purchase an aftermarket Liquid Pressure Sensor for Fuel or Oil this is what Tuned by Shawn recommends. These sensors have 3 wires going to them - 5V power, Sensor ground, and Signal Output. Please refer to the diagram loaded in the product images for sensor pin locations. 

What is included?

• 0-150PSIg pressure sensor
• Connector Kit

Specifications:

• 1/8 NPT Sealing Thread
• 0.5 to 4.5 volt ratiometric output (0 psi at 0.5 volts and 150 psi at 4.5 volts, linear between these points)
• 3-way circular GT150 / MP150 connector
• Requires 5 volt DC supply voltage and analog ground
• Accuracy: ±0.15 %FSS typ.
• Temp Drift: <0.50% Full Scale
• Stability: <0.25% Full Scale/Year
• Operating Temp: -40C to 125C
• Burst Pressure: 1000PSI
• Response Time: 1 ms (10% to 90% step change in pressure)
• Wetted Materials: 304L Port & 316L Stainless Steel diaphragm
• Vibration: 20G’s peak to peak sinusoidal
• Weight: <30g
• Supply Current: 5mA MAX. at 5 Vdc
• Installation torque: Two to three turns from finger tight