We have accumulated abundant project experience in designing custom automotive wire harness for new energy vehicles, traditional fuel vehicles and recreational vehicles, and can flexibly adjust wire gauges, pin definitions and structural layouts according to vehicle electronic architecture. For multi-functional complex wiring demands, we provide one-stop custom cable assembly and wiring harness integrated manufacturing services, covering PCB board embedding, multi-branch splitting, anti-interference wiring and protective outer wrapping processing. Meanwhile, our mature development system for vehicle diagnostic cable adapter has supported a large number of aftermarket refitting factories and vehicle detection enterprises, providing stable signal transmission adapters for ECU debugging, OBD expansion and vehicle fault detection. All products implement full-process quality inspection and comply with RoHS environmental protection and automotive industry safety standards.
This CAB-800-OBD-V8 split OBD expansion harness is a multi-branch vehicle expansion adapter specially developed for automotive post-market modification and ECU professional debugging, which is completely different from the short single-core auxiliary jumper wires introduced previously. This product abandons simple single-channel connection design, adopts multi-way shunt architecture with built-in PCB control panel, and focuses on multi-signal synchronous transmission and intelligent power switching, targeting professional vehicle modification, fault diagnosis and on-board electronic expansion scenarios.
| Item |
Description |
| Product Name |
CAB 800 OBD V8 OBD Split Extension Wiring Harness |
| Type |
Automotive OBD expansion harness / Multi-channel split automotive wiring harness with PCB control board |
| Voltage |
DC 300V, 10ms withstand voltage test, standard 12V DC vehicle working voltage |
| Wire Specification |
UL1007 stranded wire, 22AWG & 24AWG, single wire outer diameter 1.4mm, multi-color insulation classification |
| Connector & Terminal Material |
Nickel-plated brass OBD terminals, PA66+GF automotive-grade plastic housing, optional gold plating for terminals; precision spring shrapnel terminals |
| Working Temperature |
-40℃ ~ +105℃, meets long-term automotive cabin and engine compartment temperature requirements |
| Length |
260±10mm Total Length, Custom Length Fully Supported |
| Minimum Insulation Resistance |
≥5MΩ |
| Maximum Conduction Resistance |
≤5Ω |
| Compliance Standard |
All raw materials meet RoHS environmental protection standard |
| Application Fields |
Vehicle OBD expansion refitting, on-board auxiliary equipment power distribution, automotive ECU debugging connection, RV low-voltage circuit expansion, intelligent vehicle electronic module wiring, automotive diagnostic equipment extension wiring |
| Specific Shipping Cost |
Please Contact Us |
In terms of internal structure and wiring technology, the harness uses UL1007 standard 22AWG & 24AWG multi-color stranded copper wires, with clear color distinction for power supply, grounding, ignition and signal lines, convenient for later wiring inspection and maintenance. The core part is embedded with customized PCB boards FB10109 and FB10110, which is designed with BAT, IGN, DO2, GND functional pins, supporting 12VDC power switch control; the product sets up standardized PCB test procedures, which can complete multiple on-off cycle tests to ensure stable output of voltage signals. Key signal sections adopt twisted-pair wiring design, effectively resisting electromagnetic interference from vehicle circuits, greatly improving the stability of long-distance signal transmission, which is a prominent advantage compared with ordinary simple jumpers. As a customized finished product of custom cable assembly and wiring harness, each branch length, pin sequence and splitting position strictly follow drawing standards, and can be fine-tuned according to customer installation space requirements.
For connectors and outer protection, the main port adopts standard OBD16PIN automotive connector with nickel-plated brass terminals, equipped with PA66+GF high-temperature resistant engineering plastic shell, and stainless steel shrapnel locking structure to prevent plug loosening caused by vehicle vibration; multiple branch terminals are equipped with independent plastic connectors of different specifications, classified into vehicle main connection port, driver branch and accessory branch, to realize simultaneous connection of multiple electronic devices. The whole harness is wrapped with three-strand black woven mesh tube for abrasion resistance and scratch resistance, key nodes are fixed and insulated with heat shrink tubes, and cable ties are used for positioning and bundling to avoid messy wire arrangement during installation. As a professional vehicle diagnostic cable adapter, it is specially optimized for vehicle detection equipment access, which can expand a single OBD interface into multiple independent channels, realizing simultaneous work of diagnostic instrument, modified controller and on-board auxiliary equipment.
In quality control, the finished product will go through strict multi-dimensional testing before delivery: 100% full conduction inspection to eliminate open circuit, short circuit and pin misalignment; DC 300V 10ms voltage withstand test, insulation resistance ≥5MΩ, conduction resistance controlled within 5Ω; repeated functional verification of PCB power switching to guarantee consistent and reliable signal output. The product works stably in the environment of -40℃~+105℃, adapting to the temperature changes inside vehicle cabins and engine compartments. Relying on our mature manufacturing experience of custom automotive wire harness, all raw materials and accessories are inspected in incoming quality control, with no burr, deformation, peeling and rust on the surface.
In practical application, this harness is widely used in automotive ECU programming debugging, vehicle fault detection, car light modification, navigation power expansion, RV low-voltage circuit distribution and intelligent vehicle electronic module wiring. Compared with conventional simple extension wires, it has stronger anti-interference ability, richer expansion channels and controllable power functions, and has become a high-matching preferred accessory for professional auto repair shops and vehicle modification manufacturers. The complete sets of accessories such as fixing brackets and card retainers are equipped separately, and classified packaging is adopted for convenient storage and on-site construction.
