用伏特表测量红色接头处的熔断点火装置开关输出电路。
Using a voltmeter measure fused ign sw output ckt at the red conn.
驾驶员可通过开关电动源和点火元件之间的电路来开始启动和熄火。
The ignition switch allows the driver to start and stop ignition by opening and closing the circuit between the electrical engry source and the other ignition components.
该电路是有线，使其通电只有当汽车的点火开关已关闭。
The circuit is wired so that it is powered up only when the car's ignition switch is closed.
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