Auto Meter 2661 Z-Series Electric Fuel Pressure Gauge Traditional incandescent lighting illuminates around the perimeter of the dial Includes data acquisition grade solid-state pressure transducer, providing unmatched accuracy and durability even in the harshest environments Auto Meters race proven digital stepper motor electric instruments provide unmatched accuracy while keeping hazardous fluids outside of the vehicle The accuracy of digital stepper motor gauges is further increased by utilizing a self calibration sequence during power up Gauge kit includes 1/8 NPT stainless steel pressure transducer, wiring harness, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation