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2. Principle of Clearance Lamp Control The clearance lamp is controlled using a light switch. When the switch is in the clearance lamp position, the terminals 5# and 6# of the light switch will be turned on to make the power supply from the fuse F4 get to the clearance lamp via the angle 5#, and the front and rear clearance lamps connect to the fuses F13 and F14 respectively. In addition, the license plate lamp also lights. 3. Night Light and Electric Headlamp Control When the light switch is in the clearance lamp position, the terminals 6# and 9# of the light switch are turned on, which supplies the electric power to the terminal 4# of the nightlight regulating switch and thus makes all nightlight circuit power on. Surely, the brightness is controlled by the regulation resistance mounted on the nightlight switch. When the light switch is in the headlamp position, the power supply from the fuse F11 is connected via the angles 3# and 8# of the headlamp switch which are used to supply the electric power to the electric switch and headlamp relay. In this case, the electric switch can employ its slide resistor to control the operation of electric motor. So, from the principles above, it can be concluded that the night light works only when the light switch is in the clearance lamp or headlamp position, and the electric headlamp can be adjustable only when the light switch is in the headlamp position.
IV. Headlamp Control
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