Branched end layout分支端头布局
Conductors separate toward different ends, creating individual connection points. Branch lengths and directions can follow the equipment modules.导线向不同端头分出，形成独立接入位置。各支路可围绕设备模块分别安排长度与方向。
Vehicle Lighting Harness汽车灯线束
H4 Dual Headlight to Dual-Relay Branch HarnessH4双前照灯转双继电器分支线束
H4 Dual Headlight to Dual-Relay Branch Harness combines branched end layout, relay connection section, end transition layout. Interface, circuit and installation data guide dimensions, material selection and sample review.H4双前照灯转双继电器分支线束的结构重点包括分支端头布局、继电器连接部位、端头转接与组合。接口、电路与安装资料将作为尺寸、物料和样品制作的确认依据。
- Branched end layout分支端头布局
- Relay connection section继电器连接部位
- End transition layout端头转接与组合
CONSTRUCTION结构解析
Connection structure and design details连接结构与设计要点
Use the h4 dual headlight to dual-relay branch harness form as a starting point and confirm these design points against drawings and the actual equipment.以H4双前照灯转双继电器分支线束的结构形式为起点，结合图纸和实际设备确认以下设计要点。
Relay connection section继电器连接部位
Ends or branches are organized around relay connection points. Routing can distinguish control-side and switched-circuit paths.端头或分支围绕继电器连接位置组织，线束布局可区分控制端与受控回路的走向。
End transition layout端头转接与组合
The assembly organizes a transition or combined connection, with end directions, transition sections and fixing arranged around the equipment positions.组件以转接或组合形式组织连接，可围绕两端设备位置安排端头方向、过渡段与固定。
Protection and control circuits保护与控制回路
Define loads, control logic, protection-device positions and service access before conductor and branch selection. Housing shape alone does not establish ratings or control functions.先核对负载、控制逻辑、保护器件位置与维修可达性，再安排线径和分支。不能仅凭外壳形状判断保护额定或控制功能。
CONFIGURATION结构与选配
Construction & customization options结构与定制配置
The table describes the construction and available configuration choices. Materials, dimensions, circuits and inspection requirements are agreed for each project.以下说明展示结构与可配置内容。具体材料、尺寸、电路和检验要求按项目确认。
| Lamp model, functions and driver arrangement灯具型号、功能与驱动方式 | Define circuits from the lamp, driver and functions.灯具、驱动器与功能确定初始电路。 |
|---|---|
| Supply voltage, polarity and PWM conditions供电电压、极性及PWM条件 | Identify supply, polarity, PWM and body-control requirements.供电、极性、PWM及车身控制要求分别识别。 |
| Lamp connectors, branches and circuit diagram灯具接头、分支与电路图 | Allocate interfaces, branches and lamp sides from the installation drawing.接口、分支及左右侧灯组按装车图分配。 |
| Sealing, installation location and temperature密封、安装位置与温度要求 | Select protection for sealing, thermal zones and moving body parts.密封、热区与移动车身部位采用对应防护。 |
| Circuit and revision reference电路与版本依据 | Provide vehicle or equipment identity; model year and market; lamp positions and technologies; lamp, bulb, driver and mating-connector data; system voltage; circuit and pin tables; continuous, inrush and fault current; fuse, relay, BCM, PWM or LIN control; ground strategy; route and branch datums; temperature, water, salt, vibration and flex exposure; drawings or samples; labels; quantity; and required validation.请提供车辆或设备身份、年款与市场、灯位与灯具技术、灯具、灯泡、驱动器和对插件资料、系统电压、回路与针脚表、持续、冲击与故障电流、保险、继电器、BCM、PWM 或 LIN 控制、接地策略、走线与分支基准、温度、水、盐、振动及弯折暴露、图纸或样品、标签、数量与所需验证。 |
| Sample and manufacturing configuration样品与制造配置 | Approved requirements become controlled drawings, pin and circuit tables, BOMs, cut lists, splice maps, branch datums, protection instructions, labels and test definitions. First articles are checked for mating, reach, lamp installation, current path, voltage drop and agreed functions before repeat production.批准需求会转化为受控图纸、针脚与回路表、物料表、裁线表、接续图、分支基准、防护工艺、标签与测试定义。重复生产前检查首件的对插、可达、灯具装配、电流路径、压降与约定功能，线束、灯具、车辆配置、工装及检验记录按版本保持关联。 |
APPLICATIONS连接的应用
Application directions应用方向
These are connection directions for project discussion. Suitability depends on interfaces, circuits, installation conditions and project validation; configuration can be adapted to the equipment.以下为可讨论的连接方向。实际适用性取决于接口、电路、安装环境和项目验证，可按设备需求调整。
Exterior lighting and signals外部照明与信号
Arrange side and functional circuits from the lamp definition. Define circuits from the lamp, driver and functions.左右侧与功能回路按灯具定义布置。选配时，灯具、驱动器与功能确定初始电路。
Work and auxiliary lamps工作灯与辅助灯
Include loads, switches and relays in the full supply path. Identify supply, polarity, PWM and body-control requirements.负载、开关和继电器纳入完整供电路径。选配时，供电、极性、PWM及车身控制要求分别识别。
Moving body sections车身移动部位
Coordinate fixing and service access on doors, tailgates or bumpers. Allocate interfaces, branches and lamp sides from the installation drawing.车门、尾门或保险杠走线兼顾固定与拆装。选配时，接口、分支及左右侧灯组按装车图分配。
Lamp terminals and service termination灯具端子与维修端接
Match contacts, wire size, crimping and insulation coverage to the original lamp interface before defining replacement length. Select protection for sealing, thermal zones and moving body parts.灯具维修引线需按原接口核对端子、线规、压接和绝缘覆盖，确认后再安排替换长度。选配时，密封、热区与移动车身部位采用对应防护。
Driver and dimming interfaces驱动与调光接口
Distinguish PWM, bus and direct switching from device documents. Define circuits from the lamp, driver and functions.PWM、总线或直接开关由设备文件区别。选配时，灯具、驱动器与功能确定初始电路。
Bumper and front-end modules保险杠与前端模块
Treat fixing, service and road exposure as one routing condition. Identify supply, polarity, PWM and body-control requirements.接头固定、拆装和道路暴露作为一套布线条件。选配时，供电、极性、PWM及车身控制要求分别识别。
ENGINEERING & PRODUCTION工程与制造
Adapt the connection to your equipment.围绕设备，调整连接细节。
Touched by me, better it’ll beTouched by me, better it’ll be
Custom wire harness manufacturing in China中国工厂 · 定制线束制造
Our China factory supports vehicle lighting harness projects through custom wire harness manufacturing and OEM/ODM development. Interface, circuit and installation data guide material selection, sample builds and manufacturing-document approval before repeat production.Super Smile-Tech 中国工厂围绕汽车灯线束的项目需求提供定制线束制造与 OEM/ODM 支持。我们从接口、电路与安装资料开始，协同物料选配、样品制作和制造文件确认，再按批准要求组织重复生产。
Lamp model, functions and driver arrangement灯具型号、功能与驱动方式
Define circuits from the lamp, driver and functions.灯具、驱动器与功能确定初始电路。
Supply voltage, polarity and PWM conditions供电电压、极性及PWM条件
Identify supply, polarity, PWM and body-control requirements.供电、极性、PWM及车身控制要求分别识别。
Sealing, installation location and temperature密封、安装位置与温度要求
Select protection for sealing, thermal zones and moving body parts.密封、热区与移动车身部位采用对应防护。
PRODUCT QUESTIONS产品问答
Product & customization questions产品与定制常见问题
Is a vehicle lighting harness a universal product?汽车灯线束是通用产品吗？
No. It is a broad family of lamp pigtails, front and rear sub-harnesses, protected power looms, control leads and complete kits. Vehicle, market, lamp technology, pinout, load, controller and route determine the released version.不是。它是灯具尾线、前后分线束、受保护电源线束、控制引线与完整套件组成的广泛家族，车辆、市场、灯具技术、针脚、负载、控制器与走线共同决定放行版本。
Can a matching lamp connector prove compatibility?灯具连接器能插合就能证明兼容吗？
No. Connector keying does not prove pin assignment, terminal rating, ground strategy, lamp load, PWM, diagnostics or LIN compatibility. These must be verified against the actual lamp and vehicle system.不能。连接器防错不能证明针脚定义、端子额定值、接地策略、灯具负载、PWM、诊断或 LIN 兼容性，必须结合真实灯具与车辆系统核对。
Can you build harnesses for halogen, HID and LED lamps?可以制作卤素、HID 与 LED 灯线束吗？
Yes, when lamp, ballast or driver data and the vehicle control architecture are defined. Their current, heat, switching and diagnostic behaviour differ, so the same wire and relay assumptions do not apply to every technology.可以，但需要明确灯具、镇流器或驱动器资料及车辆控制架构。不同技术的电流、热、开关和诊断行为不同，不能全部套用同一线径与继电器假设。
Start with your interface and installation requirements从您的接口与安装需求开始
Share mating interfaces, a circuit table, target lengths or a sample for the h4 dual headlight to dual-relay branch harness. We can use them to review configuration and sample requirements.提供H4双前照灯转双继电器分支线束的对插接口、回路表、目标长度或参考样品，我们据此梳理选配与样品确认事项。