There are two modes for the brightness and colour setting: Daytime mode and Nighttime mode. You can set the different colours and brightness in different two modes, then you can turn on/off the headlight to switch between Daytime and Nighttime modes after you connect the Yellow wire( in the power cable) to the headlight fuse.
The fuel pressure gauge observes the gasoline pressure in the pipeline between the gasoline pump and the fuel injector. If the pressure is insufficient, it means that the amount of fuel injected by the fuel injector will be reduced, not only the fuel supply will be insufficient, but also fog. The chemical effect becomes worse, the explosion speed slows down, and in severe cases, there is a risk of the engine bursting.
One year limited warranty and free lifetime tech support. You will also have access to an unrivalled customer support experience in the event you have any questions about our gauges, pods and accessories.