Auto Meter 4454 Ultra-Lite Electric Water Temperature Gauge Traditional incandescent lighting illuminates around the perimeter of the dial Gauge kit includes 1/8 NPT temperature sender, 3/8 and 1/2" NPT adapters, wiring harness, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation Acquire data for later review with one-touch Peak Recall functionality Set a custom alert specific to your vehicle & receive warning notification to highlight the need for driver attention Includes data acquisition grade temperature sender, providing unmatched accuracy and durability even in the harshest environments