27-Way Female Wire To Wire Housing Natural Automotive Connector with Terminal for Toyota Car – High-Reliability Signal Interface for Factory Harness Adapters

The TS30378-27P-21 is a 27-pin female wire-to-wire connector housing designed to provide a reliable and reversible connection solution for upgrading audio systems in select Toyota vehicles. As the mating counterpart to the male plug TS30378-27P-11, this natural-colored connector enables a no-cut installation method, allowing aftermarket head units to integrate seamlessly with the vehicle’s original wiring loom. This preserves factory wiring integrity, simplifies future upgrades or restorations, and reduces installation time. It supports full signal transmission for speaker channels, power delivery, ground circuits, dashboard illumination, and steering wheel control inputs, ensuring complete functionality after stereo replacement.

Manufactured with precision molding techniques, the TS30378-27P-21 ensures accurate terminal positioning and secure retention of phosphor bronze or brass contacts. Its female design provides stable, low-resistance connections that resist loosening from engine vibration or thermal cycling. The natural housing color matches OEM harnesses in specific Toyota models, offering both aesthetic consistency and easier identification during complex installations. Suitable for use in passenger cars, marine vessels, UTVs, and off-road machinery, this connector delivers dependable performance in environments exposed to moisture, dust, and temperature fluctuations.

Key Specifications

Natural Housing for OEM-Matching Appearance and Secure Fit

The off-white (natural) housing of the TS30378-27P-21 is engineered to visually and functionally match original equipment manufacturer harnesses in compatible Toyota models. This color choice ensures a clean, factory-original look after installation and improves visibility in dark dashboard compartments, helping technicians avoid misalignment. The housing includes precise alignment guides and a positive locking tab that clicks securely into place when mated, preventing accidental disconnection due to road vibration or thermal expansion. Its chemical-resistant surface maintains a clean appearance over time, resisting yellowing and staining from UV exposure and engine bay contaminants.

Robust Construction for Harsh Environments

Built from high-performance thermoplastics—PBT+GF15% or PA66+GF30%—this female connector offers excellent mechanical strength, dimensional stability, and resistance to heat deformation. These materials ensure reliable performance in extreme temperatures ranging from -40°C to +120°C, making them suitable for use in engine compartments, marine environments, and off-road vehicles. The internal Terminals are made from copper alloy, brass, or phosphor bronze, providing superior conductivity, low contact resistance, and long-term corrosion resistance. This combination ensures stable signal transmission and extended service life in demanding automotive and industrial applications.

Custom Design and Mold Development Available

We offer comprehensive OEM and ODM services for businesses looking to develop custom connector solutions or branded harness kits. Our engineering team supports clients from concept to mass production, including material selection, mold design, prototype testing, and packaging customization. Whether you need a modified version of this connector or a completely new design, we provide flexible manufacturing capabilities and strict quality control to deliver high-performance components tailored to your technical and commercial requirements.

Quality and Compliance You Can Trust

Every TS30378-27P-21 connector is produced under strict quality management systems in accordance with IATF 16949 for automotive standards, ISO14001 for environmental responsibility, and RoHS for hazardous substance compliance. To ensure reliability, each unit undergoes 100% visual and functional inspection prior to shipment, verifying housing integrity, terminal alignment, color consistency, and proper mating with the corresponding male plug. This rigorous quality control process guarantees that every batch meets the highest standards for performance and durability.

Still Not Sure About Compatibility?

If you're uncertain whether this connector fits your vehicle's factory harness, feel free to reach out with photos or model details. Our technical support team is ready to assist with fitment verification and technical recommendations. For specialized applications or hard-to-find connectors, we can help source or manufacture the right solution for your project.

Who We Are: TSCN – Your Automotive Connectivity Partner

Zhejiang Tongsheng Electronic Co., Ltd. (TSCN) is a leading manufacturer of automotive electrical components with over two decades of experience in precision connector design and production. Specializing in audio interface solutions, wire harness accessories, and custom OEM connectors, we serve clients across the global automotive aftermarket. Our commitment to innovation, quality, and customer service has made us a trusted supplier for installers, distributors, and brand partners worldwide.

Get in Touch for Samples or Pricing

Interested in evaluating this connector for your product line or installation business? Contact us at mandy@tscn.com.cn to request technical documentation, sample units, or volume pricing. Our team provides fast, professional support to help you find the right connectivity solutions for your needs.

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ZHEJIANG TONGSHENG ELECTRONIC CO.,TLD are founded in 1998, we are a ISO 9001 and ISO/TS16949 certificated professional manufacturer engaged in automotive aftermarket audio connector and wire harness, terminals and mold development.

Our automotive products are widely used in car audio entertainment connection, one-button start, new energy wiring harness, intelligent remote start wiring harness etc.

We are OEM/ODM available, we performs "excellent quality, super connector" as our honest management principles actively, and provide customers with professional solution service. Our main customer are in North America, Southeast Asia, Europe etc.