Dongfeng KC Combination switch assembly C3774010-C4301

The assembly integrates 8 essential vehicle control functions in a single ergonomic unit, designed for intuitive operation by the driver:

Lighting Control: Adjusts high beam, low beam, position light, and fog light (with a rotating knob and push-pull switch for clear function differentiation).

Turn Signal Control: Features a spring-return lever (left/right activation) with a 45° angle stroke, ensuring reliable signal triggering and automatic reset after steering.

Windshield Wiper/Washer Control: Regulates wiper speed (low/high/intermittent) and activates the washer pump via a multi-position lever, with a 2-second washer spray delay for thorough cleaning. Horn Activation: Includes a built-in horn button on the switch surface, responsive to 5-10N of pressure for quick emergency signaling.

Housing: Crafted from flame-retardant ABS plastic (UL94 V-0 rating) with a matte finish, resistant to high temperatures (operating range: -40℃ to +85℃) and aging from long-term sunlight exposure.Internal Components: Uses silver-plated copper contacts (contact resistance ≤50mΩ) for low electrical loss and extended service life, with a lifespan of over 100,000 switch cycles (exceeding industry standards of 80,000 cycles).Lever Mechanism: Equipped with a stainless steel return spring and POM (polyoxymethylene) friction pads, ensuring smooth lever operation and preventing loose or stuck issues after repeated use

The assembly meets Dongfeng’s automotive electrical component standards (Q/DFM 035-2024) and undergoes rigorous safety testing:

Electrical Safety: Passes 1,000V AC insulation resistance test (insulation resistance ≥100MΩ) and 500V DC dielectric strength test, preventing short circuits or electric shock hazards.

Environmental Resistance: Achieves IP65 dust and water resistance rating, protecting internal components from dust intrusion and splashing water (e.g., rain, road spray) during driving.

Vibration Resistance: Withstands 10-500Hz frequency vibration (3-axis, 20G acceleration) for 2 hours, simulating road to ensure no contact loosening or function failure.

Ergonomics: The switch lever features a non-slip rubber grip (texture pattern for enhanced friction) and a 15° angle design, aligning with the driver’s natural hand movement to reduce operational fatigue during long-haul trips.Installation: Uses 2 M5×10 hexagon socket bolts (included) for direct mounting to the steering column bracket, with a pre-aligned positioning pin to ensure correct orientation—professional technicians can complete replacement in 20-25 minutes.Troubleshooting: Each function’s wiring is color-coded (matching the original harness’s color standard) and labeled on the connector, simplifying diagnostic checks if a function malfunctions