Lighting and signal system failure
Cause: There is a ground fault in the horn wire. Phenomenon: The horn does not sound. After the ignition lock is turned on, the current indicates a large number (refers to the horn current through the ammeter). Measure: Check the tying point at the horn fire wire terminal and eliminate it.
Cause: The speaker cable is disconnected. Phenomenon: The horn does not ring. After the ignition lock is turned on, the number of currents is normal. When the horn button is pressed, the current meter pointer does not swing. Measure: Check whether the lead wire in the steering shaft tube is detached or broken and reconnected.
Cause: The contact of the horn to the button wire ground or button is inseparable. Phenomenon: The horn is long and the sound changes when the button is tapped (referring to no horn relay). Measure: Check if the bottom of the steering shaft breaks the horn wire. Whether the button is skewed or if the spring leaf is deformed.
Cause: The horn relay contacts are sintered. Phenomenon: the horn is humming. Remove the "power" terminal of the relay and the wire does not ring. Measure: Polish the relay contacts.
Cause: The speaker diaphragm is broken or the resonance plate nut is loose. Symptom: The horn sounds dull and the volume is reduced significantly. Measure: Replace the diaphragm or tighten the resonance plate.
Air gap
Cause: The contact gap in the speaker disappears. Phenomenon: The speaker does not sound. When the speaker button is pressed, there is only one impact sound and the light brightness is reduced simultaneously. Measure: Adjust the center rod end nut and reduce the contact gap.
Cause: The lamp filament breaks, the phenomenon: the light does not shine, when the lights turn off, the current represents a small number (depending on the number of wattage broken lamps) the fuse is not broken, measures: use a new lamp.
Cause: The lamp fuse blows. Phenomenon: The phenomenon is the same as above. When the two terminals of the fuse are shorted, the current display number will increase or the lamp will light up. Action: After checking and eliminating the short circuit fault, replace the new fuse.
Cause: The lamp can be cut off or the wire is disconnected. Phenomenon: The light is off. When the lamp is stopped, the current is low. When the short lamp is connected, the current does not change. Measure: Use a temporary line to replace each line of fire. When the lights are on, the line points are checked in the substitute section.
Cause: The common ground wire inside the double wire lamp is blown. Phenomenon: When this light is turned on, only the weak light, and sometimes the symmetrical side, the corresponding filament will be slightly bright. Measures: Use instead.
Light Bulb
Cause: The headlight axis is misaligned. Phenomenon: The light is too close or too high. The left and right lights are not parallel. According to the bias, measures: Calibrate the headlight against the wall.
Nuts
Cause: The contact pressure in the speaker is too low. Phenomenon: The sound of the speaker is small and the current of the speaker is low. Measure: Adjust the nut at the center of the horn to reduce the contact gap.
Reason: The air gap of the horn is too large. The phenomenon: The horn sounds low and the volume becomes smaller. Measures: Adjust the size appropriately.
FireWire
Cause: The scintillator contacts are sinter. Phenomenon: When the turn signal is turned on, the turn signal is on but not blinking. Measures: Replace the scintillator or polish the contacts.
Cause: The scintillator contact gap is too large. Phenomenon: The steering light is weak and does not flicker. Only the reddish filament can be seen. Measure: Adjust the contact gap of the scintillator.
Cause: The power of the left-right turning lamp is inconsistent. Phenomenon: The blinking frequency of the left and right turn lights is not the same. The high-power side flashes quickly and the brightness is slightly higher. Measures: Replace the flashing light that is too fast (or too slow). Lamp specifications.
Cause: The brake light switch contact ablation oxidation, phenomenon: brake light is not lit or the light is very weak, measures: replace the brake light switch or polish the contacts.
Cause: Brake lamp contacts are sintered. Phenomenon: Brake light is on and off. Measures: Replace the brake light switch or trim the contacts.
Cause: There is a ground fault in the horn wire. Phenomenon: The horn does not sound. After the ignition lock is turned on, the current indicates a large number (refers to the horn current through the ammeter). Measure: Check the tying point at the horn fire wire terminal and eliminate it.
Cause: The speaker cable is disconnected. Phenomenon: The horn does not ring. After the ignition lock is turned on, the number of currents is normal. When the horn button is pressed, the current meter pointer does not swing. Measure: Check whether the lead wire in the steering shaft tube is detached or broken and reconnected.
Cause: The contact of the horn to the button wire ground or button is inseparable. Phenomenon: The horn is long and the sound changes when the button is tapped (referring to no horn relay). Measure: Check if the bottom of the steering shaft breaks the horn wire. Whether the button is skewed or if the spring leaf is deformed.
Cause: The horn relay contacts are sintered. Phenomenon: the horn is humming. Remove the "power" terminal of the relay and the wire does not ring. Measure: Polish the relay contacts.
Cause: The speaker diaphragm is broken or the resonance plate nut is loose. Symptom: The horn sounds dull and the volume is reduced significantly. Measure: Replace the diaphragm or tighten the resonance plate.
Air gap
Cause: The contact gap in the speaker disappears. Phenomenon: The speaker does not sound. When the speaker button is pressed, there is only one impact sound and the light brightness is reduced simultaneously. Measure: Adjust the center rod end nut and reduce the contact gap.
Cause: The lamp filament breaks, the phenomenon: the light does not shine, when the lights turn off, the current represents a small number (depending on the number of wattage broken lamps) the fuse is not broken, measures: use a new lamp.
Cause: The lamp fuse blows. Phenomenon: The phenomenon is the same as above. When the two terminals of the fuse are shorted, the current display number will increase or the lamp will light up. Action: After checking and eliminating the short circuit fault, replace the new fuse.
Cause: The lamp can be cut off or the wire is disconnected. Phenomenon: The light is off. When the lamp is stopped, the current is low. When the short lamp is connected, the current does not change. Measure: Use a temporary line to replace each line of fire. When the lights are on, the line points are checked in the substitute section.
Cause: The common ground wire inside the double wire lamp is blown. Phenomenon: When this light is turned on, only the weak light, and sometimes the symmetrical side, the corresponding filament will be slightly bright. Measures: Use instead.
Light Bulb
Cause: The headlight axis is misaligned. Phenomenon: The light is too close or too high. The left and right lights are not parallel. According to the bias, measures: Calibrate the headlight against the wall.
Nuts
Cause: The contact pressure in the speaker is too low. Phenomenon: The sound of the speaker is small and the current of the speaker is low. Measure: Adjust the nut at the center of the horn to reduce the contact gap.
Reason: The air gap of the horn is too large. The phenomenon: The horn sounds low and the volume becomes smaller. Measures: Adjust the size appropriately.
FireWire
Cause: The scintillator contacts are sinter. Phenomenon: When the turn signal is turned on, the turn signal is on but not blinking. Measures: Replace the scintillator or polish the contacts.
Cause: The scintillator contact gap is too large. Phenomenon: The steering light is weak and does not flicker. Only the reddish filament can be seen. Measure: Adjust the contact gap of the scintillator.
Cause: The power of the left-right turning lamp is inconsistent. Phenomenon: The blinking frequency of the left and right turn lights is not the same. The high-power side flashes quickly and the brightness is slightly higher. Measures: Replace the flashing light that is too fast (or too slow). Lamp specifications.
Cause: The brake light switch contact ablation oxidation, phenomenon: brake light is not lit or the light is very weak, measures: replace the brake light switch or polish the contacts.
Cause: Brake lamp contacts are sintered. Phenomenon: Brake light is on and off. Measures: Replace the brake light switch or trim the contacts.
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