Where is the car headlight switch?
There are two types of headlight switches:
1, one is located on the left side of the steering wheel, used to open the turn signal switch. This switch usually has two gears, the first is a small light, the second is a headlight. In domestic cars and Japanese cars, this switch is more common. Simply turn forward to the headlight gear to turn on the headlight.
2. The other switch is located on the left side of the instrument panel. This headlight switch needs to rotate to the right, the first gear is the small light, the second gear is the headlight. This switch is mainly used in European car series and high-end car series.
Car headlights, also known as car headlights, LED day running lights, as the eyes of the car, it is not only related to the external image of the owner, but also closely related to the safe driving at night or in bad weather conditions.
Repair steps for broken headlight switch
Check fuses : First check whether the headlamp fuse is blown. If blown, replace the fuse with a new one.
Check bulb : Check whether the headlamp bulb is damaged. If the light bulb is burned or broken, it needs to be replaced with a new one.
Check relay : Check whether the headlight relay is working properly. If it doesn't work, replace it with a new relay.
switch : Use the multimeter to check the headlight switch. If there is a problem with the switch, replace it with a new one.
Check circuit : Check whether the headlight circuit is broken or loose. If there is a problem, fix the wiring.
Seek professional help : If you are unable to resolve the problem on your own, it is recommended to seek a professional auto repair technician for diagnosis and repair.
Common problems and solutions
poor power contact : If the headlight suddenly goes out, you can try tapping the lampshade. If the headlight can be re-lit after knocking, it is likely that the power socket is in poor contact. At this point, the power cord socket of the headlamp can be unplugged and then reinserted to ensure good contact.
expiration of service life : if the headlight bulb has reached the end of its service life, such as the short-light bulb is damaged, then it needs to be replaced in time.
switch button loss of elasticity : this situation is usually caused by the switch internal spring dislocation or damage to components such as pressure plates. You can try to reinstall and ensure the stability of the fixing point, or adjust the spring inside the switch.
How to wire the headlight switch
Steps to connect the headlight switch
Check line configuration : The cable configuration of a headlamp usually includes four lines, one is positive power supply line, one is negative grounding wire, one is the signal cable controlling the positive electrode, and the other is the return route of the control signal line.
Connect the positive wire : The positive wire is first connected to the wiring of the ignition switch, depending on whether it is necessary to keep the headlight on after turning off the key. If this is not possible, the A/CC line is plugged in to ensure that it is still lit when the key is off.
Connect the negative wire : The negative wire is usually connected directly to the body for grounding.
signal transmission : when the headlight switch is turned on, the output signal line is transmitted to the circuit through the relay, so that the lamp is connected with the positive line. Since the positive line is already on and the negative line is always grounded, the bulb can emit light normally.
Wiring precautions for different types of lamps
electric tricycle headlight : First confirm the ground and properly connected, near and far light control lines are connected to the corresponding switch. The negative electrode of the LED headlight is connected with the negative electrode of the vehicle, the far light is connected with the far light control line, and the near light is connected with the near light control line.
near and far light : of the three wires, one is usually a black lap wire, and the other two represent the control wires of the low and high beams respectively. When connecting cables, ensure that the positive and negative terminals are correctly connected to avoid short circuit.
Common problems and solutions
single link single control switch : usually two wires are needed, the live wire is connected to the switch and then to the lamp, the ground wire and the neutral wire are directly connected to the lamp.
dual switch : Each switch has six contacts. When connecting cables, ensure that the live wire, neutral wire, and control wire are correctly connected to avoid safety risks.
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