Circuit diagram of automobile headlights

Car headlights circuit diagram: When the high beam is turned on, control the high beam end to be grounded.

When measuring, the negative pole (ground) is connected, and the low beam lamp is suspended at this time. The low beam lamp does not light because there is no loop. At this time, the voltage of the low beam lamp is measured by the positive power supply voltage of the filament, and the same is true after dimming.

Light switch: Turn on the headlight low beam at the end of the switch, press forward to turn it into a high beam, and press backward to return to the low beam.

Modification method:

Increase power or shoot lights.

This method costs less, but its effect is limited. Changing the 50W headlight to 100W will not simply double the brightness, but will only increase a little. Because the circuit does not match the bulb of 100W, the line loss will increase correspondingly, and the voltage at both ends of the headlight will drop, which will increase the line load and bury the accident hidden danger.

Conclusion: Simple modification, low cost, poor effect, unsafe and not recommended.