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.
Analog gauges are exposed directly to the source of their measurements, which in this case is the voltage output of an oxygen sensor. Fluctuations affect the needle proportionately, and these variations translate into accurate readouts. As a result, this mechanical gauge will immediately demonstrate any changes in the air/fuel ratio with pinpoint precision. Given the smooth needle movement, any rate of change can be detected very easily.
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.