28Pin Natural Wire Harness Connector with Terminals – Automotive Connector for Select Toyota Car Models

The TS30101-28P-21-1 is a 28-pin female automotive connector designed for reliable signal transmission in factory-installed audio and control systems. Manufactured to match OEM specifications, this natural-colored housing serves as a direct replacement or upgrade component for select Toyota vehicles, enabling seamless integration into existing wiring harnesses. Ideal for car stereo installations, marine audio upgrades, UTV control panels, and aftermarket modifications, this connector ensures stable electrical performance in high-vibration environments without altering original wiring.

As the female counterpart to the male plug TS30101-28P-11-1, it supports clean, plug-and-play connectivity for audio units, navigation systems, and auxiliary electronics. The neutral natural (beige/off-white) housing blends seamlessly with factory looms, aiding visual identification during installation and reducing the risk of miswiring in complex multi-harness setups.

Technical Specifications at a Glance

• Model    TS30101-28P-21-1

• Connector Type    Female Housing

• Number of Poles    28

• Housing Color    Natural (Beige)

• Mating Plug    TS30101-28P-11-1 (Male)

• Insulation Material    PBT+GF15% or PA66+GF30%

• Terminal Composition    Copper Alloy / Brass / Phosphor Bronze

• TPA System    Not Included (Standard Version)

• Primary Application    Toyota Audio & Control Wiring

• Certifications    IATF 16949, ISO14001, RoHS

• Quality Assurance    100% Inspected Before Shipment

• Minimum Order    1,000 Pieces

• Production Lead Time    2–15 Days

• Customization Support    OEM & ODM with Mold Development

Differentiation Between TPA and Standard Versions

Zhejiang Tongsheng Electronic produces two variants of the TS30101-28P series: one equipped with Terminal Position Assurance (TPA) and the standard version without (such as the TS30101-28P-21-1). The absence of TPA in this model makes it suitable for applications where vibration exposure is minimal or where space constraints prevent the use of secondary locks. It’s important to note that the internal structure and terminal retention mechanism differ between the two versions—ensuring compatibility requires verifying your vehicle’s original harness design. Mixing TPA and non-TPA connectors may result in improper mating or terminal damage.

Robust Construction for Long-Term Performance

The connector body is molded from either PBT+GF15% or PA66+GF30%, offering excellent resistance to heat, moisture, and mechanical stress. These engineering-grade thermoplastics maintain structural integrity across a wide temperature range (-40°C to +120°C), preventing deformation during engine operation or extreme weather conditions. The terminals are made from high-purity copper alloy, brass, or phosphor bronze, ensuring low contact resistance, high conductivity, and long-term corrosion resistance for uninterrupted audio and data signals.

OEM & ODM Manufacturing Services Available

We offer comprehensive customization options for brands and system integrators requiring private-labeled or modified connectors. Our capabilities include custom mold creation, tailored packaging, technical documentation, and small-batch prototyping. Whether you're developing an aftermarket kit or integrating components into a larger assembly, our team provides scalable production with consistent quality control and fast turnaround times.

Compliance and Quality Verification

All units are produced under IATF 16949 (automotive quality management), ISO14001 (environmental standards), and RoHS (restriction of hazardous substances) certifications. Each TS30101-28P-21-1 undergoes 100% inspection prior to dispatch, including checks for dimensional accuracy, terminal alignment, housing finish, and mating compatibility. This ensures every connector meets the reliability standards expected in automotive electronic systems.

About TSCN – Reliable Automotive Connector Manufacturer

Zhejiang Tongsheng Electronic Co., Ltd. (TSCN) has been a trusted supplier of automotive electrical components since 1998. With over two decades of experience, we specialize in precision-molded connectors used in factory audio systems, aftermarket harness kits, and specialty vehicle applications. Our products are widely distributed to installers, distributors, and OEM partners globally.

Contact Us for Product Support

For pinout diagrams, sample requests, compatibility confirmation, or bulk pricing, please reach out to us at mandy@tscn.com.cn. Our technical team is available to assist with product selection, application guidance, and customization needs for your next automotive project.

Browse Our Full Automotive Connector Line

Visit our official website to explore the complete TS30101 series and other compatible connectors. Find the right solution for your Toyota, Lexus, or specialty vehicle upgrade—whether you need standard housings, TPA-equipped models, or fully customized designs for unique integration challenges.