| 摘要 |
A lighting control circuit for head lamp has three relays with coils. When a lighting switch is turned on, high beams of right and left head lamps are lit. When the dimmer switch is turned on, low beams of right and left head lampls are lit. When the lighting switch is turned off, right and left head lamps are lit by low voltage which is equal to 50% of a rated voltage so as to improve the durability of the head lamps.
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