
Function / Purpose
1. Press the brake pedal, the internal contacts are closed, the rear brake light is activated, alerting the vehicles behind to slow down;
2. Two contact points provide two independent signal outputs: one for the brake tail light, and the other for the vehicle's ECU and ABS system, serving as the braking signal;
3. Release the brake pedal, the contact points are disconnected, the brake light goes off, and at the same time, a "release braking" signal is sent to the electronic control system;
4. It is a braking safety signal component, affecting the braking lights, cruise control, and ABS-related logic.
Product features
1. The dual-contact independent circuit design ensures that the two signals do not interfere with each other. One is the lamp signal and the other is the electrical control signal, which is specifically for the Changan T7H and other models of Euro V/Euro VI standards.
2. The mechanical push-pin pressing structure is sensitive in response and can withstand continuous vibrations of the cab.
3. OEM standard threads + yellow special plugs, can be directly plugged and unplugged for replacement without rewiring.
4. With a built-in reset spring, the pedal will automatically spring back after being released.
5. Dust-proof protection structure, capable of resisting dust and moisture in the cab, suitable for long-distance and heavy-load working conditions.


Material
1. Switch housing: Galvanized metal casing, rust-proof;
2. Threads and push rod: Carbon steel;
3. Internal conductive contacts: Silver alloy, stable conductivity, resistant to electric arcs and less prone to burning;
4. Plug housing: PA66 fiber-reinforced engineering plastic, resistant to high temperatures;
5. Outer sheath of wiring bundle: PVC oil-resistant and cold-resistant sheath;
6. Sealing gasket: NBR rubber, dust-proof and water-proof.
FAQ
Q: What is the function of WG9725716002?
A:This dual-contact brake light switch is installed on the brake pedal bracket. When the driver presses the brake pedal, the internal contacts close to turn on rear brake lamps. It sends two separate brake signals: one for brake lights, another signal to ECU and ABS system. When releasing brake pedal, the circuit cuts off and brake lights turn off
Q: Where is it installed and which trucks fit?
A: Mounted on cabin brake pedal bracket. Fits SINOTRUK HOWO T7H, HOHAN, SITRAK C7H, Steyr heavy trucks. Thread size M10×1, with yellow 4-pin connector. One piece per vehicle.
Q: What are the product features?
A: 1. Dual independent contact circuits, separate signal for lamp and ECU.
2. Mechanical plunger structure, fast response, anti-vibration for heavy duty truck.
3. OEM standard thread and plug, plug & play direct replacement, no wiring modification.
4. Built-in return spring, automatic reset after releasing pedal.
5. Dustproof structure, works under rough long-distance driving conditions.
Q: Installation note?
A: Adjust the plunger stroke after installation. Test brake light function before road test. Ensure connector is fully locked to avoid poor contact.
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