Black-Sheathed Core Wire Adapter Main Harness with O-Type Ground Ring on One End and 4.8mm Spade Terminal on the Other

Customized adapter main wire harness constructed from black-sheathed multi-core (or single-core, selectable per customer requirements) wire, featuring an O-type ground ring terminal on one end and a 4.8mm spade terminal on the other. It is designed specifically for main power or grounding circuit adapter connection needs within equipment, and is widely used in household appliances, industrial equipment, automotive electronics, machinery, and various electrical systems requiring an integrated connection between grounding protection and power adapter functions. Black is one of the most widely used general-purpose sheath colors in the electrical harness field, offering practical advantages such as good resistance to soiling and light-induced aging, as well as good visual coordination with the appearance color schemes of most equipment. Black sheath materials also typically offer reliable baseline performance in wear resistance, aging resistance, and flame retardancy, fully meeting the requirements of the vast majority of conventional application scenarios.
The O-type ground ring terminal on one end of the harness features a structural design that facilitates secure fastening to an equipment housing, ground bar, or grounding stud using bolts or screws. Compared with open-ended terminals, the closed ring structure resists detachment or loosening due to external vibration once fastened, providing stable and lasting grounding protection for the equipment. The terminal is stamped from high-quality copper alloy and surface-treated with tin plating, offering excellent conductivity and oxidation resistance that effectively reduces the contact resistance of the grounding circuit, fully delivering the safety protection that grounding is intended to provide. The 4.8mm spade terminal on the other end of the harness is one of the most widely used quick-connect terminal formats in the industry, offering notable advantages such as simple insertion/removal, no need for additional tools, and broad application compatibility, enabling quick connection to the vast majority of corresponding switches, relays, fuse holders, and terminal posts available on the market. This terminal is likewise made of high-quality copper alloy with a tin-plated surface, offering excellent conductivity and durability.
As a main harness product, this item is typically designed with conductor cross-sectional area and sheath thickness parameters that fully account for the actual current-carrying requirements of a main power supply or main grounding circuit. The conductor is manufactured from high-quality copper core wire, offering low resistivity and excellent conductivity that effectively reduces line loss, fully ensuring power transmission efficiency and grounding circuit reliability. The sheath material offers excellent wear resistance, aging resistance, and flame retardancy, capable of withstanding relatively complex and variable internal or external equipment environments, fully ensuring the harness's electrical safety and mechanical durability over long-term use. We support in-depth customization of the number of conductor cores, wire gauge, overall harness length, the O-type terminal ring bore diameter, and the specific dimensions of the 4.8mm spade terminal according to each customer's actual device interface standards, truly achieving a flexible "one customer, one solution" production model. During production, we strictly implement continuity testing, tensile strength testing, terminal crimp strength testing, insulation resistance testing, and visual inspection as part of a multi-layered quality control process, ensuring every harness meets relevant industry standards before shipment — providing customers with a safe, reliable, and stable-performing customized main wire harness solution, serving industries such as appliance manufacturing, industrial automation, automotive electronics, and machinery manufacturing.