28Pin Female Red Car Aftermarket Stereo Audio Connector 5-2188225-6 – High-Visibility Harness Adapter for Automotive Audio Upgrades

The TS30243-28P-21-5 is a 28-pin female red Automotive Connector engineered to provide a reliable and reversible solution for integrating aftermarket stereos into factory wiring systems. Designed as the female receptacle that pairs with the male plug TS30243-28P-11-5, this connector enables plug-and-play installation without cutting or splicing original vehicle harnesses. The bright red housing offers high visibility under the dashboard, making it easy to identify and connect during stereo upgrades. This model is commonly used in audio adapter kits for Toyota, Lexus, and other Japanese vehicles that require a 28-pin red-coded interface, ensuring a secure and accurate connection every time.

Perfect for both professional installers and DIY enthusiasts, the TS30243-28P-21-5 supports full signal transfer including left and right audio channels, power, ground, illumination, and steering wheel control inputs. Its robust design ensures stable Electrical Contact and resistance to vibration, making it ideal for use in passenger cars, marine yachts, UTVs, and off-road vehicles. By preserving the original factory harness, this connector allows for easy restoration or future upgrades, offering a clean, non-invasive method for modernizing vehicle audio systems.

Key Specifications

Why Choose a Red Female Automotive Connector?

The red housing of the TS30243-28P-21-5 serves as a visual identifier, making it stand out clearly among other connectors under the dashboard. This high-visibility color helps technicians and DIYers quickly locate the correct interface during stereo installations, reducing the risk of misconnections and saving valuable labor time. Unlike black or white connectors that can blend into the wiring loom, red is used in many factory systems to denote specific audio or control circuits. This model is particularly useful in vehicles where color-coding is critical for proper harness routing and system compatibility.

Durable Construction for Demanding Environments

Manufactured from high-strength engineering plastics—PBT+GF15% or PA66+GF30%—this connector offers excellent resistance to heat, impact, and chemical exposure. These materials maintain their shape and integrity across extreme temperatures (-40°C to +120°C), preventing warping or cracking over time. The internal Terminals are made from copper alloy, brass, or phosphor bronze, ensuring low electrical resistance, high conductivity, and long-term corrosion resistance. This robust construction makes the connector suitable for use in harsh environments such as marine yachts, off-road UTVs, and high-mileage vehicles where vibration and temperature fluctuations are common.

Custom OEM & ODM Manufacturing Services

We offer full customization options for companies developing branded audio solutions. Whether you need a modified pin configuration, different housing color, or a completely new mold design, our team supports end-to-end product development. With in-house tooling, rapid prototyping, and scalable production, we help brands bring reliable, market-ready products to the automotive aftermarket efficiently and cost-effectively.

Compliance and Quality Assurance

All connectors are produced in accordance with IATF 16949 (automotive quality), ISO14001 (environmental management), and RoHS (hazardous substance restrictions). Each unit undergoes 100% inspection before shipment to verify terminal alignment, housing integrity, color accuracy, and mating performance. This ensures consistent quality and reliability for every customer, whether ordering samples or large production runs.

Need Help Confirming Fitment?

Not sure if this connector matches your vehicle? Compare it with the provided images or send us a photo of your factory harness or the port it connects to. Our technical team will verify compatibility quickly. If you can't find the exact part you need, email us at mandy@tscn.com.cn—we’ll help source or develop the right solution for your application.

About TSCN – Automotive Connector Specialist

Zhejiang Tongsheng Electronic Co., Ltd. (TSCN) has over 25 years of experience in designing and manufacturing high-quality automotive electrical components. We specialize in precision connectors for audio systems, control modules, marine electronics, and specialty vehicles. Trusted by distributors and installers worldwide, our products combine OEM-level engineering with aftermarket flexibility to deliver superior performance and reliability.

Contact Us for Samples and Pricing

For technical specifications, pinout diagrams, sample units, or volume quotes, please reach out to our sales team at mandy@tscn.com.cn. We offer responsive support and customization guidance to help you succeed in the competitive automotive aftermarket.