AEM 30-5139 Analog Voltage Gauge 8 - 18V
- Seven user-selectable backlighting to match most popular factory gauge clusters
- Each gauge comes with interchangeable black & silver bezels and black and white gauge faceplates
- Features a differential analog output, 0V to 5V for data logging or closed-loop tuning
- Smooth, accurate and quick needle action
- Built-in readiness light and internal diagnostic warning light