Dongfeng xinjiang X7 truck parts left headlight harness 3724210-TXGG01Y

Built to unlock the complete functionality of the Dongfeng Xinjiang X7’s left headlight, this harness delivers dedicated power and signal channels for every lighting mode. It includes separate circuits for high beam (12V/55W), low beam (12V/55W), daytime running light (DRL, 12V/10W), turn signal (12V/21W), and position light (12V/5W)—each with color-coded wires (e.g., red for power, yellow for turn signal, white for DRL) for quick identification during maintenance. A dedicated 2.5mm² ground wire with a corrosion-resistant copper terminal ensures stable electrical grounding, preventing voltage fluctuations that could damage the headlight’s LED or halogen bulbs. Unlike basic harnesses that only support partial functions, this unit enables the X7’s left headlight to operate in all factory-designed modes, maintaining optimal visibility for night driving, foggy weather, or lane changes

Engineered to withstand the harsh environment of the truck’s front end—including moisture, road salt, dust, and vibration—the harness features comprehensive protective layers. The outer sheath is made of flame-retardant PVC (UL94 V-0 rating) with a 1.2mm thickness, resisting oil, grease, and abrasion from rocks or road debris. Internal wires are insulated with cross-linked polyethylene (XLPE), which offers excellent electrical insulation and thermal stability (operating temperature range: -40℃ to 105℃), ensuring performance in freezing winters or hot summers. All connectors are IP67-sealed, blocking water and dust intrusion even in heavy rain or muddy driving. The harness is also wrapped with abrasion-resistant fabric tape at stress points (e.g., near the front bumper and headlight mounting bracket) to prevent wire wear from vibration. These protections ensure the harness maintains electrical integrity for over 7 years

Designed to deliver consistent signal and power for the left headlight, the harness uses high-quality materials to minimize interference and voltage loss. Power wires are made of high-conductivity oxygen-free copper (OFC) with low resistance (≤0.01Ω/m for 1.5mm² wire), ensuring the headlight receives full voltage (12V±0.5V) for bright, stable illumination. Signal wires (for turn signal and DRL) are twisted in pairs (12 twists per meter) to reduce electromagnetic interference (EMI) from the truck’s engine or radio system, preventing false signals that could cause the turn signal to flicker or the DRL to shut off unexpectedly. Terminal crimps are precision-controlled (90-110N crimp force) to ensure tight connections, avoiding intermittent contact from road vibration. Additionally, the harness includes inline 15A fuses for power circuits, protecting the headlight and BCM from overcurrent damage

Designed for efficient installation on the Dongfeng Xinjiang X7, the harness features a plug-and-play design with pre-assembled connectors and mounting clips. All connectors are keyed to prevent reverse insertion, and the harness is pre-routed with labeled segments (e.g., “Headlight Connector,” “BCM Connector”) that match the X7’s left front wire routing channels. The package includes 8 high-strength plastic mounting clips (compatible with the X7’s left front frame pre-drilled holes) and a detailed installation guide with X7-specific diagrams. Installation steps are straightforward: route the harness along the X7’s left front frame, secure it with clips, plug the connectors into the left headlight and BCM, and test for function. No specialized tools (e.g., wire strippers or crimpers) are required, and a professional technician can complete installation in 35 minutes or less. This easy installation design reduces labor costs and minimizes truck downtime—critical for commercial operations relying on the X7’s front lighting for safety