This manual covers the BMW 325i Convertible, chassis code E30, from the 1987 model year, including the i, ES, and CONVERT. trim levels. This iconic vehicle, powered by the M20B25 inline 6-cylinder engine, is renowned for its exceptional engineering, engaging driving dynamics, and the open-air freedom offered by its convertible design. The E30 generation is celebrated for its blend of sporty performance and everyday usability, representing a significant era in BMW's history. Its robust construction and driver-focused approach have cemented its status as a desirable classic.

This comprehensive Electrical Troubleshooting Manual is designed to provide in-depth guidance for diagnosing and repairing the electrical systems of the 1987 BMW 325i Convertible. It details all automotive electrical circuits, including ignition, starting, charging, lighting, instrumentation, fuel injection, and the specific electrical components of the power convertible top. The manual features detailed, color-coded wiring diagrams, component location guides, and systematic troubleshooting procedures, including fault-finding trees and symptom-based diagnosis. It is an essential resource for professional BMW technicians, independent repair shops, and advanced DIY enthusiasts seeking to maintain the reliability and functionality of this classic vehicle.