The electric circuit is one of the important components of the electric system of the motorcycle, which is responsible for the transmission of electricity to the electric equipment of the whole motorcycle.

Medium and small displacement motorcycle electrical lines can usually be divided into mixed use of DC electrical lines, AC electrical lines and separate use of DC electrical lines in two ways.

In order to protect the safe operation of DC electrical equipment and DC electrical lines, a fuse is arranged in the DC electrical line. The fuse is arranged in the output terminal of the positive terminal post of the battery and is connected in series in the DC electrical line.

The fuse can protect DC electrical equipment and DC electrical lines, to prevent the short circuit failure of DC electrical lines and DC electrical equipment, causing a large amount of battery discharge, so that it will burn out DC electrical equipment and DC electrical lines.

Therefore, in the motorcycle electrical maintenance operations, shall not use fine copper wire or fine steel wire to replace the burned out fuse. Fuses that meet the specifications specified in the motorcycle's electrical technology shall be used.

Because of motorcycle dc electrical equipment and dc electrical wiring short circuit fault is mostly hidden, more is not easy to find directly, ruled out more troublesome to short-circuit fault, beyond a dc electrical equipment and dc electrical wiring short circuit failure, and often cannot directly confirm whether dc electrical equipment and dc electric short circuit fault has been completely ruled out. Need to change a new fuse to test the troubleshooting results, and may just replace the fuse burned out.

Radio service specialty in check, eliminate the power part burn out insurance tube failure, adopt the method of using light bulbs instead of insurance tube, the implementation of exclusion of electrical wiring and electrical equipment fault, both convenient and safe, and can determine whether the fault has been completely ruled out in time, is a kind of very good check out a good way to electrical wiring and electrical equipment failure.

We should also use this method in the implementation of the inspection to eliminate the motorcycle DC electrical equipment and electrical circuit short circuit fault.

In the implementation of the inspection and troubleshooting of DC electrical equipment and electrical circuit short circuit fault, a high-power motorcycle bulb with the same rated working voltage as the battery is first connected to the DC electrical circuit instead of the safety tube series, the short circuit current through the bulb to make the bulb light.

Since the light bulb is a load, only the rated working current of the light bulb is allowed to pass, and the short-circuit current at this time, namely the rated working current of the light bulb, is many times smaller than the short-circuit current when the light bulb is not connected in series.

Therefore, the use of light bulbs will not make the battery discharge too much, but also conducive to the short circuit fault safety inspection elimination, in the implementation of the inspection to eliminate DC electrical equipment and electrical lines short circuit fault process, as long as the light bulb is observed to extinguish, you can accurately know that the short circuit fault point is completely eliminated.

In the implementation of inspection to eliminate DC electrical equipment and electrical circuit short circuit fault, the first selected light bulb string access to DC electrical lines, because the motorcycle electrical equipment of the working current and short circuit fault point of the short circuit current will pass through the light bulb, so that the light bulb light.

In order to avoid the emergence of the working current electric equipment, affect fault point inspection accuracy, the ignition switch should be closed and all electrical equipment control switch, and then you can according to the light bulb series dc electric circuit, the ignition switch in the job position and light bulb light brightness, largely determine the scope of fault point, to facilitate further explored.

After the fuse is burned out, connect the light bulb to the DC electrical line instead of the fuse string. When the ignition switch is not opened, the light bulb will glow. It can be determined that the short circuit fault occurs in the range from the fuse end of the positive terminal terminal of the battery to the ignition switch, the voltage regulator rectifier and its connecting line.

If the light bulb does not emit light, turn on the ignition switch at this time. After turning on the ignition switch, the light bulb will emit light immediately. It can be determined that the fault point of short circuit occurs in the range from the ignition switch to the electrical equipment and the control switch of the electrical equipment and its connection line.

If the light bulb still does not emit light after the ignition switch is turned on, it can be determined that the short-circuit fault point occurs in the range of the control switch of the electrical equipment to the electrical equipment and its connecting lines.

You can operate the control switch of the electrical equipment in turn to continue to check, when the use of a control switch of the electrical equipment, the light bulb to light, you can finally determine the short circuit fault point occurs in a range of electrical equipment and control switch.

Short circuit fault points after inspection, to determine the general range, you can according to the motorcycle electrical schematic diagram provided by the information, to begin to eliminate the short circuit fault points, first disconnect the electrical equipment connected wire inspection, to determine the short circuit fault point is in the electrical equipment or in the electrical line.

If the short circuit fault point is confirmed by inspection in the electrical equipment, you can repair or replace the faulty electrical equipment, eliminate the short circuit fault point.

If the inspection confirms that the short circuit fault point occurs in the electrical line, the electrical line is easy to wear, bending, cutting and other short circuit fault prone to inspection, until the complete elimination of the short circuit fault point.

After the short circuit fault point is completely eliminated, the light bulb will be turned out by the light, or the luminance is significantly dimmed, indicating that the short circuit fault point has been completely eliminated, remove the light bulb in the string access to the electrical line, and install the fuse back on it, and the maintenance operation can be ended