digital 52mm Auto Air Fuel Ratio Gauge + Voltmeter volt Meter Indicator Smoked 12V for car turbo boost racing kit black

Specification:

- Easy to install,easy to use

- Universal fit for 12 volt car

- Black Case

- Black Gauge Ring

- Size: 52mm diameter or 2 inch gauge

Package Included:

Package Included: （as the picture shows）

1x Air Fuel Ratio Gauge
OR
1x Sensor
OR
1x Gauge Cup

Wholesale and drop shipping are both welcomed

For wholesale, we will offer the discount or free express shipping which only takes 3-7 days to arrive.

For drop shipping, We could send the goods to your customers directly and won't leave information about us if youd like to.

O2 sensor instructions

- The white line is at heater ab
- Black line signal line C, gray line signal ground D
- The green wire of the instrument is connected with the black wire of the sensor.
- The gray line is connected to the negative pole of the battery.
- One white wire connect with the car shell or battery negative pole.
Another white wire connect to the ACC line of ignition switch
- The white line is the heater and does not distinguish between positive and negative electrodes
- About the air fuel gauge, please see the installation instructions.