1. Check all external lighting and a sound signal. |
2. Visually check all available electric sockets, plaits of wires and a bracket of fastening of plaits of wires. |
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3. If any separate bulb of external lighting, perhaps does not burn, the bulb fused and it needs to be replaced. If both bulbs of stoplights, perhaps do not burn, the switch of stoplights failed. |
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4. If several bulbs, then, perhaps at the same time do not burn, there is a damage to an electric power-supply circuit of bulbs or the fuse fused. |
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