T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
| Quantity: | |
|---|---|
990.12.71.0041-1
Shacman
| Attribute | Specification |
|---|---|
| Voltage Rating | 24V DC (Standard truck electrical system) |
| Current Rating | Typically 5A (Sufficient to handle standard brake light circuit load) |
| Electrical Connection | 2-pin or 3-pin plug connector (Most common: Normally Open / NO type; some variants may include additional signal pins) |
| Switch Type | Mechanical plunger-type limit switch (Normally open, closes upon pedal release/activation depending on design) |
| Operation Principle | Activated by physical movement of the brake pedal rod or lever |
| Contact Resistance | Ultra-low contact resistance (< 50 mΩ) ensures fast and reliable signal transmission |
| Housing Material | High-strength engineering plastic (heat and impact resistant) |
| Internal Contacts | Corrosion-resistant metal contacts (typically copper alloy or silver-plated) |
| Environmental Protection | Designed for harsh conditions: dust, vibration, temperature extremes |
| Operating Temperature Range | -40°C to +105°C |
| Lifespan | Rated for over 1 million cycles (suitable for commercial fleet use) |
| Warranty | Typically 3 to 12 months, depending on supplier |
Name1
Name2
Verify Compatibility Before Purchase
Confirm fitment using:
Exact truck model and year
VIN (Vehicle Identification Number)
Physical inspection of existing switch (connector type, plunger orientation)
Disconnect Battery Before Installation
Always disconnect the negative terminal of the battery before working on any electrical system.
Prevents short circuits and accidental lighting issues.
Professional Installation Recommended
Although relatively simple, improper installation can lead to brake lights staying on, not turning on, or intermittent operation.
Ensure proper alignment with brake pedal linkage.
Adjust Switch Position After Installation
Too deep: Lights stay on even when pedal is released
Too shallow: Delayed or failed activation
Many brake light switches require fine adjustment after mounting:
Adjust so that the brake lights turn on immediately upon slight pedal movement
Test All Brake Light Functions
After installation, test:
Both upper and lower brake lights
Center high-mounted stop lamp (CHMSL)
Operation with trailer connected (if applicable)
Check for Error Messages (on CAN-equipped Trucks)
On modern digital dashboards, a faulty or misaligned brake switch may trigger warning icons or messages (e.g., “Brake System Fault”).
Avoid Oil/Grease Contamination
Do not lubricate the switch plunger or body — grease attracts dirt and can interfere with operation.
Inspect Mounting Bracket
Ensure the bracket holding the switch is secure and undamaged — loose brackets cause inconsistent triggering.
Replace if Damaged or Corroded
Internal corrosion or broken plastic housings compromise safety — never reuse damaged units.
| Attribute | Specification |
|---|---|
| Voltage Rating | 24V DC (Standard truck electrical system) |
| Current Rating | Typically 5A (Sufficient to handle standard brake light circuit load) |
| Electrical Connection | 2-pin or 3-pin plug connector (Most common: Normally Open / NO type; some variants may include additional signal pins) |
| Switch Type | Mechanical plunger-type limit switch (Normally open, closes upon pedal release/activation depending on design) |
| Operation Principle | Activated by physical movement of the brake pedal rod or lever |
| Contact Resistance | Ultra-low contact resistance (< 50 mΩ) ensures fast and reliable signal transmission |
| Housing Material | High-strength engineering plastic (heat and impact resistant) |
| Internal Contacts | Corrosion-resistant metal contacts (typically copper alloy or silver-plated) |
| Environmental Protection | Designed for harsh conditions: dust, vibration, temperature extremes |
| Operating Temperature Range | -40°C to +105°C |
| Lifespan | Rated for over 1 million cycles (suitable for commercial fleet use) |
| Warranty | Typically 3 to 12 months, depending on supplier |
Name1
Name2
Verify Compatibility Before Purchase
Confirm fitment using:
Exact truck model and year
VIN (Vehicle Identification Number)
Physical inspection of existing switch (connector type, plunger orientation)
Disconnect Battery Before Installation
Always disconnect the negative terminal of the battery before working on any electrical system.
Prevents short circuits and accidental lighting issues.
Professional Installation Recommended
Although relatively simple, improper installation can lead to brake lights staying on, not turning on, or intermittent operation.
Ensure proper alignment with brake pedal linkage.
Adjust Switch Position After Installation
Too deep: Lights stay on even when pedal is released
Too shallow: Delayed or failed activation
Many brake light switches require fine adjustment after mounting:
Adjust so that the brake lights turn on immediately upon slight pedal movement
Test All Brake Light Functions
After installation, test:
Both upper and lower brake lights
Center high-mounted stop lamp (CHMSL)
Operation with trailer connected (if applicable)
Check for Error Messages (on CAN-equipped Trucks)
On modern digital dashboards, a faulty or misaligned brake switch may trigger warning icons or messages (e.g., “Brake System Fault”).
Avoid Oil/Grease Contamination
Do not lubricate the switch plunger or body — grease attracts dirt and can interfere with operation.
Inspect Mounting Bracket
Ensure the bracket holding the switch is secure and undamaged — loose brackets cause inconsistent triggering.
Replace if Damaged or Corroded
Internal corrosion or broken plastic housings compromise safety — never reuse damaged units.
