52mm 4 in 1 Multifunctional Gauge Digital Display Fuel Level Oil Pressure Water Temperature Meter Voltmeter with Backlight for Boat RV 81000329 Silver Bezel Black Dial Item Type: Boat Gauge Material: Stainless Steel 316L Bezel + Anti Fog Glass Guard Rating: IP67, fully waterproof with excellent anti fog function Display: Fuel Level + Oil Pressure + Water Temperature + Voltage Backlight Color: Red (default), Green, Blue, White, Yellow, Yellow-Green, Orange, Purple (color changeable) Operating Voltage: 9-32VDC Operating Current: ≤60mA Operating Temperature: -30°C to +70°C Storage Temperature: -40°C to +85°C IP Rating: IP67, can operate underwater at 1m Fitment: For Boats, yachts, motorhomes, trucks, motorcycles Wiring: 1. Red Wire: +9-32VDC 2. Black Wire: Oil Level Signal Input 3. Orange Wire: Backlight (+) 4. Blue Wire: Power Supply Negative (-) 5. White Wire: Oil Pressure Signal Input 6. Purple Wire: Water Temperature Signal Input