Are the headlight ground wires shared?

[StLyla]

The headlight ground wires are not shared. There are three wires in the car headlight (headlamp): One is the high beam power wire, one is the low beam power wire, and one is the common ground wire. The high beam and low beam power wires are usually colored red, yellow, blue, or green, while the ground wire is typically black or brown. Domestic vehicle models: Most domestic vehicle models (such as sedans, buses, trucks, etc.) have a negative ground (earth) electrical system, while a few models (e.g., engineering vehicles, special-purpose vehicles, etc.) have a positive ground (earth). The ground (earth) wire is directly bolted and connected to the vehicle frame or body, usually without passing through other electrical appliances for grounding. In some cases, the ground wire is connected to the vehicle frame or body by borrowing the bolt of an electrical appliance's casing, which is unrelated to the function of that appliance.