This comprehensive wiring diagram manual is specifically designed for the 1987 Porsche 928 S model. It provides detailed and in-depth information about the electrical system of your vehicle, enabling you to diagnose and troubleshoot electrical problems with confidence. The manual contains detailed illustrations and diagrams that clearly depict the intricate wiring layout of your Porsche 928 S. Even if you have limited electrical knowledge, the clear and concise explanations presented in the manual will guide you through the process of identifying electrical issues and finding solutions. This manual is a valuable resource for any Porsche 928 S owner who wants to understand and maintain the electrical system of their car. You can save time and money by using this manual to diagnose and repair electrical issues yourself, instead of relying solely on expensive garage services.

The Porsche 928 S, produced from 1987 to 1989, marked a significant evolution of the iconic 928 grand tourer. This iteration refined the already impressive original model with numerous improvements, making it a more powerful, luxurious, and refined driving experience. The 928 S boasted a 4.7-liter V8 engine, a significant bump from its predecessor's 4.5-liter unit. This larger displacement, combined with revised intake and exhaust systems, resulted in a substantial power increase to 316 horsepower. This power was harnessed by a 5-speed manual or a 4-speed automatic transmission, both offering smooth and responsive performance. The 928 S also featured a revised chassis with improved suspension geometry, resulting in more precise handling and better roadholding. The interior received a touch of luxury with enhanced materials and detailing, creating a more refined and comfortable environment for driver and passengers.

The Porsche 928 S was a testament to the brand's commitment to continuous refinement and innovation. It offered a potent blend of comfort, luxury, and performance that set it apart from its contemporaries. The 928 S solidified the model's reputation as a sophisticated and practical grand tourer, capable of tackling long distances with ease and delivering thrilling performance when desired. While the 928 series eventually ceded its position to the 924 and 944 models, the 928 S remains a highly sought-after and valuable classic car, capturing the essence of Porsche's engineering excellence and a bygone era of luxurious and sporty driving.