There are numerous suppliers and manufacturers of auto connectors that provide a wide range of products for the automotive industry. 

Well-known companies that specialize in auto connectors:

TE Connectivity: TE Connectivity is a global leader in connectivity and sensor solutions. 

They offer a comprehensive range of automotive connectors designed for various applications, including powertrain, electrical systems, infotainment, and more.

Yazaki Corporation: Yazaki is a major Japanese automotive components supplier, including electrical distribution systems and connectors. 

They offer a wide range of automotive connectors for various vehicle systems, such as engine management, lighting, sensors, and communication networks.

Delphi Technologies (now part of Aptiv): Delphi Technologies, now part of Aptiv, is a leading provider of advanced electrical and electronic systems for the automotive industry. 

They offer a wide range of automotive connectors, terminals, and connection systems for various applications.

Molex: Molex is a global supplier of electronic solutions, including automotive connectors. 

They provide a broad portfolio of connectors designed for automotive applications, covering areas such as power distribution, in-vehicle networking, sensors, and more.

Amphenol Corporation: Amphenol is a multinational company specializing in electrical and electronic connectors. 

They offer a range of automotive connectors and interconnect solutions for applications such as engine management, safety systems, infotainment, and more.

Well-known auto connector suppliers based in China:

Amphenol China: Amphenol is a global company with a significant presence in China. 

Amphenol China offers a range of automotive connectors and interconnect solutions for various applications.

Molex (China) Co., Ltd.: Molex has a strong presence in China, with manufacturing facilities and sales offices. 

Molex China provides automotive connectors, terminals, and connectivity solutions.

JST (China) Co., Ltd.: JST is a leading global manufacturer of electrical connectors. 

JST China offers a wide range of automotive connectors and connection systems for different automotive applications.

YUEQING HAIDIE ELECTRIC CO.,LTD:Specialized in the production of automotive electrical and automotive parts.

Include wire harness, connectors,auto connectors, automotive plug sockets, computer board fittings, terminals, high temperature anti-corrosion silicone rubber jackets, HID lights, and electrical instruments.

Sumitomo Electric Wiring Systems (SEWS) China: Sumitomo Electric is a renowned supplier of automotive electrical systems and components. 

SEWS China provides a comprehensive range of automotive connectors and wiring harness solutions.

YAZAKI (China) Investment Co., Ltd.: YAZAKI is a major Japanese automotive component supplier with a strong presence in China. 

YAZAKI China offers automotive connectors, wiring harnesses, and other electrical components.

TE Connectivity (China): TE Connectivity has a significant presence in China and provides a wide range of connectivity solutions for the automotive industry.

TE Connectivity China offers automotive connectors and sensor solutions.

It's worth noting that these are just a few examples, and there are many other auto connector suppliers and manufacturers in the market. 

When selecting a supplier, it's essential to consider factors such as product quality, reliability, pricing, availability, and compatibility with specific automotive requirements and standards.

When working with any supplier, it is important to conduct thorough research, evaluate their product quality, reliability, certifications, production capabilities, and consider factors such as pricing, lead times, and customer support. 

It's also advisable to request samples and engage in communication to ensure they can meet your specific requirements.