Feature: 1. 2' (52mm) Black Face Gauge with a Magnified Lens. 2. Electronic Transmission Temperature Sensor with 1/8th NPT Male Threads. 3. Lighting on the dial for easy reading in the darkness. 4. Suitable for 12V vehicles. Specification: Product Name: Transmission Temperature Gauge. Material: Aluminum. Housing color: Black. Face Color: Black. Voltage: 12V. Diameter Size: 2' (52mm). Unit: ℉. Wire Connection:  Red: 12v ignition switch（+）.  Green: temp sensor wire.  Black: 12v battery（-）. Sensor Type: Electronic Temperature Sensor. Fitment: Universal 12V Car 2'/52mm diameter Transmission Temperature Gauge. (The compatibility just for reference.Please make sure the item fit for your car before purchase.) Note: 1. We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement. (1inch=2.54cm) 3. Although Instructions Is Included.Professional Installation Is Highly Recommended！ 4. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. Package Included: 1 X Transmission Temperature Gauge. 1 X 1/8NPT Temperature Sensor. 1 X Signal Wire Crimp Connector. 1 X Ground Wire Crimp Connector. 1 X Power Wire. 1 X Bracket. 1 X Manual