Buick Regal Switch & Plug
About Switch & Plug
A headlight switch is a component to activate the headlights and tail lights. In addition to this, a head light switch enables the user to adjust between intensities of light for different conditions. The switch is usually found on the dashboard as a knob or as a rotating knob on one of the steering stalks or even as a push button. Without a headlight switch or a faulty switch, the operation of headlight is not possible blinding the night visibility for a driver and potentially cause a lot of accidents. Headlight Plug, often known as headlight socket is the bridge between the electrical components and the electrical systems in the vehicle. The headlights sockets have three wires, one for ground, one for high beam and the last one for low beam. If the headlight assembly has separate high beam and low beam bulbs, the sockets have only two wires each. A bad socket can cause the headlights to not work. Though they are not regular maintenance parts, a check on them is necessary to ensure the safe functioning of the headlights.
What is the purpose of Switch & Plug?
The working of a headlight switch differs with different vehicle configurations. However, the most commonly used type is where the switch transmits a low current, a 12V signal to activate the headlight relays which in turn activate the headlights. The other types provides ground to the headlight relays or generate a 5V signal to the body control module which operates the headlamps. The sockets are connected to the battery through two or three electrical wires based on the type of bulb used which have the recommended rating. A fuse is present in the circuit which protects it from any excess current flowing in. This circuit is activated by a relay, when the driver switch the on the headlights, the relay activates this circuit which powers the socket and which is then received by the bulb.
How Switch & Plug Works?
The switch enables the driver to have complete control on the headlights of a vehicle right from turn on and off to adjusting intensities of headlights and also give a provision to adjust the lights to high beam or low beam depending in the driving conditions making sure that the light doesn't blind the oncoming drivers. The headlight plugs are the components where the headlight bulbs are plugged into. The socket acts like the female side which is powered by the vehicle's battery and the bulbs are the male side that are connected to the power supply through the socket.
Where is Switch & Plug Located?
The location of a headlight switch differs with different vehicle configurations. It can be present as a independent knob or switch on the dashboard. The switch can also be integrated into the turn signal stalks on the steering column itself. The sockets are present inside the headlight housings, where the bulbs are plugged into.