Modern blue LED through-the-dial lighting provides clear visibility during nighttime use. Gauge kit includes 1/8" NPT temperature sender 3/8" and 1/2" NPT adapters wiring harness 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. 12 and 16 volt compatible compatible with nearly every street car or race car electrical system