What does the car bulb H7 mean?
There are several types of automotive light bulbs: H1, H4, H7 and other H1 is a terminal, the use of bulb shell ground, H4 is the three terminals are double filament light, H7 is 2 terminals.
With the lens of the high beam, with the lens of the low beam (the above two lamps are generally used in the original xenon lamp system such as: PST, AUDI, etc.) under normal circumstances the model of the bulb: H1 (for the high light bulb), H3 (For the fog lights), H4 (as far as the light of the light bulb), H7 (mostly near light bulbs, but also used to do high beam, such as AUDI A6).
It is the model of the bulb, H1, H4, H3, H7, etc., H1 is monofilament single foot, and more for high beam! H7 is monofilament feet, mostly for low beam, H4 is double wire three feet light bulb Light far in a light bulb
H7 (for the fog lights), H4 (as far as the light of the light bulb), H7 (mostly for the light bulb, but also used to do high beam, the light bulb, Such as AUDI A6).
