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HOWO A7 HOWO336 HOWO 371 Ignition Switch Assembly WG9925580103 FROM SINOTRUK COMPANY
Installed on the dashboard or steering column in the driver's cab, it is responsible for controlling the vehicle's ignition and starting: after inserting the key, rotating it can switch between "OFF-ACC-ON-START" positions, control the on/off of the circuit, the starter motor, and power the instruments/electrical systems, etc.
FUNCTION
1. Controls the engine starting process. In the START position, it reliably closes the starter relay circuit, providing a high current to the starter motor to ensure engine crankshaft rotation and successful ignition. Simultaneously, it automatically returns to the ON position after the key is released, maintaining continuous power supply to the circuits required for engine operation and preventing damage to the starter motor from prolonged operation.
2. Provides main power distribution and safety protection for the vehicle. As the core node of the vehicle's main power switch, it is responsible for the orderly distribution of battery power to critical electrical loads such as the engine control system, instrument panel, lighting system, wipers, and horn, supporting normal vehicle operation and auxiliary functions. The internal contact design is resistant to high current and oxidation, ensuring reliable contact and rapid starting response over long-term use.
3. Integrates key anti-theft and mechanical locking functions. Equipped with a dedicated key, gear shifting can only be operated after the key is inserted. If no key is inserted or the key does not match, the lock cylinder is locked to prevent unauthorized starting or theft of the vehicle. Simultaneously, the mechanical structure of the lock cylinder prevents the key from falling out or being accidentally turned while driving, improving the operational safety of heavy trucks in complex road conditions.
DETAILS
| DESCRIPTION | Ignition Switch Assembly | PART NUMBER | WG9925580103 |
| WEIGHT |
0.5KG |
VOLUME |
10×10×18 cm |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | COUNTRY OF ORIGIN | CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CABIN |
Replacement Recommendation: The normal lifespan of an ignition switch is approximately 5–10 years or 500,000–1,000,000 kilometers, depending on the usage environment (dusty, humid, high-frequency starting) and maintenance. If the vehicle is over 8 years old and exhibits the above symptoms, it is recommended to replace it directly rather than repair it.
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