1. Sound the horn and turn on the headlamp. If there is a screw driver or a wire on the "- terminal of the ignition coil for fire test, if there is no fire, it is an open circuit between the low voltage terminal of the ignition coil and the ammeter. Test the fire according to the sequence of ignition coil "switch" - > ignition coil "switch power supply" terminal "- > ignition switch" - > ammeter, and diagnose the position of open circuit fault according to whether there is fire or not.

若是接线柱与导线连接不牢或接触不良，应清洁接线柱，紧固固定螺母；若是某段导线断路，就更换该段导线，所更换的导线应与原导线规格相同。

If the connection between the terminal and the wire is not firm or the contact is poor, the terminal should be cleaned and the fixed nut should be tightened; if a section of wire is open circuit, the section of wire should be replaced, and the replaced wire should be the same as the original wire specification.

2、按喇叭不响，开前照灯不亮。用导线在起动机接线柱试火，如有火，则故障为起动机接线柱电流表之间线路断路；如无火，则故障是蓄电池电量不足或其线路故障。蓄电池电量不足，应充电；线路断路，应重新接通。

2. The horn doesn't sound and the headlamp doesn't work. Use wire to test fire on starter terminal. If there is fire, the fault is open circuit between starter terminal and ammeter. If there is no fire, the fault is insufficient battery or its line fault. If the battery is insufficient, it should be charged; if the circuit is open, it should be reconnected.

3、用螺丝刀在点火线圈“-”接线柱上试火，如有火，再在分电器活动触点臂与底板间试火。如果有火，则为触点故障(如触点烧蚀、太脏、不能闭合等)，可用“白金砂条”修磨触点和调整触点间隙等方法来排除故障。如无火，转入下一步。

3. Use a screwdriver to test the fire on the "-" terminal of the ignition coil. If there is a fire, then test the fire between the movable contact arm of the distributor and the base plate. If there is fire, it is contact failure (such as contact ablation, too dirty, unable to close, etc.), which can be eliminated by "platinum sand bar" grinding contact and adjusting contact clearance. If there is no fire, go to the next step.

4、在分电器绝缘接柱与分电器壳处试火，如无火，则为分电器绝缘接柱点火线圈“-”接柱间的导线断路故障；如果有火，则为绝缘支架绝缘接柱间导线断路故障。若系接线柱与导线接触不良而断电，应清洁和紧固接接线柱与导线头；若是某段导线断路，用相同规格导线更换该段导线即可。

4. If there is no fire, it is the open circuit fault of the wire between the insulated connection post of the distributor and the "-" connection post of the ignition coil; if there is fire, it is the open circuit fault of the wire between the insulated support and the insulated connection post. If the power is cut off due to poor contact between the terminal and the conductor, the terminal and the conductor head shall be cleaned and fastened; if a certain section of conductor is open, the conductor of the same specification can be replaced.