Dongfeng KL truck parts Front wall harness assembly 3724100-C3502

Built as the “nerve center” of the truck’s front wall electrical system, this harness features a precision wiring layout optimized for signal integrity and power transmission. It uses high-purity oxygen-free copper (OFC) conductors with cross-sectional areas ranging from 0.3mm² (signal wires) to 4.0mm² (power wires), achieving conductivity ≥98% IACS and minimizing voltage drop (≤0.05V/m). Signal wires are twisted in pairs (twist pitch 18-25mm) to reduce electromagnetic interference (EMI) by 70%, preventing signal distortion for sensitive components like the headlight dimming module. Power wires for high-consumption devices (e.g., wiper motor) are equipped with dedicated fuses (10-20A) to avoid overloading. The harness’s branch design follows the KL’s front wall contour, with pre-fixed length segments that eliminate redundant wiring, reducing installation time by 40%

Engineered to endure the harsh environment of the truck’s front wall (exposed to vibration, moisture, and road debris), the 3724100-C3502 harness features a comprehensive protective structure. Wires are insulated with flame-retardant PVC (UL94 V-0 grade, 0.8-1.2mm thickness) that resists diesel fuel, cleaning agents, and high temperatures up to 125℃. The entire harness is wrapped in a braided polyester sleeve (density 20×20 strands/cm²) for abrasion resistance, preventing damage from friction with metal brackets or hoses. Critical sections (near the front bumper) use a corrugated nylon tube for additional impact protection. All connectors are IP67-rated, with HNBR rubber seals and gold-plated pins that ensure reliable contact—passing 1200-hour neutral salt spray testing (ASTM B117) with no corrosion

Optimized for stable installation and long-term reliability, the harness assembly integrates a systematic fixing design. It comes pre-equipped with 18 high-strength nylon cable ties and 12 metal mounting clips (304 stainless steel), which secure the harness to the front wall bracket at 300mm intervals—eliminating movement that causes wire fatigue. The clips feature a snap-in design that fits perfectly with the KL’s pre-drilled holes, avoiding the need for additional fasteners. A dedicated wiring duct (integrated into the harness) separates power and signal wires, preventing cross-interference and simplifying troubleshooting. The harness’s connector shells are marked with clear module labels (e.g., “Headlight Left,” “Wiper Motor”), enabling technicians to quickly identify connections and reduce installation errors by 90%

This front wall harness assembly delivers significant cost savings and maintenance convenience for Dongfeng KL operators. The OE-compatible design ensures perfect integration with the truck’s electrical system, avoiding the short circuits and component malfunctions common with aftermarket harnesses (repair costs up to $800). The high-quality materials and protective structure extend the harness’s service life to ≥300,000km—three times that of non-OE alternatives—reducing replacement frequency. Clear color-coded wires and labeled connectors simplify diagnostic work, cutting troubleshooting time by 75% when electrical issues occur. The pre-assembled design allows a 2-person team to complete replacement in 2 hours—50% faster than custom-wired solutions. Backed by a 2-year/200,000km Dongfeng warranty, it ensures reliable front wall electrical performance and predictable maintenance expenses for fleet operations