Description
Product Overview
The Auto Meter 7737 Ultra‑Lite Pro II is a compact 2‑5/8″ electric water temperature gauge designed for high‑performance street and race vehicles. Constructed from sturdy plastic with a painted exterior, it features a modern white LED that illuminates the dial for clear nighttime visibility. The gauge operates on 12‑ or 16‑volt systems and reads temperatures from 100°F to 250°F, providing rapid, accurate feedback while keeping hazardous fluids sealed away from the cabin.
Usage

This gauge is ideal for enthusiasts who demand real‑time engine monitoring during track days, daily commuting, or off‑road adventures. Its versatile voltage range fits nearly every street car or race car electrical system, and the included 1/8″ NPT temperature sender, along with 3/8″ and 1/2″ NPT adapters, allows installation on a wide variety of cooling system configurations.
Why Choose Us
Auto Meter’s reputation for race‑proven air‑core instruments ensures you receive a gauge that combines durability with precision. Each unit undergoes rigorous quality testing, and the comprehensive installation kit—complete with mounting hardware and step‑by‑step instructions—eliminates guesswork, delivering a hassle‑free setup for both seasoned mechanics and DIY owners.
Key Features
- Bright white LED through‑the‑dial lighting for excellent night‑time readability.
- Compatible with 12V and 16V electrical systems, suitable for most street and race cars.
- Includes 1/8″ NPT temperature sender and 3/8″ & 1/2″ NPT adapters for flexible installation.
- Durable plastic housing with painted finish resists corrosion and wear.
- Accurate 100‑250°F range with quick response thanks to air‑core design.
FAQ
What voltage does the gauge support?
The gauge operates on both 12‑volt and 16‑volt systems, making it compatible with virtually any street or race car electrical setup.
Is the gauge waterproof?
The gauge itself is sealed to keep hazardous fluids out of the instrument, but the temperature sender is installed in the coolant system and must be properly sealed during installation.
Can I install this gauge myself?
Yes. The kit includes all necessary adapters, mounting hardware, and detailed instructions, allowing most DIY enthusiasts to complete the installation without professional assistance.
What is the temperature range?
The gauge accurately measures engine coolant temperatures from 100°F to 250°F, providing reliable data for both normal driving and high‑performance conditions.
Does the LED dim at night?
The white LED provides consistent illumination regardless of ambient light, ensuring the dial remains easy to read in both bright daylight and dark night environments.




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