This comprehensive electrical troubleshooting manual is specifically designed for the 1988 BMW 325, 325i, and 325is models. It provides detailed information to help you diagnose and repair a wide range of electrical issues. The manual covers all styles and variations of these vehicles, ensuring you have the necessary information to tackle any electrical problem you encounter. The content includes detailed wiring diagrams, component locations, troubleshooting procedures, and repair instructions. This manual will prove invaluable to mechanics, DIY enthusiasts, and anyone looking to gain a deeper understanding of the electrical systems in these BMW models.

The BMW 325, 325i, and 325is were a trio of compact executive sedans produced by the German automaker BMW from 1985 to 1991. These models constituted the third generation of the BMW 3 Series, and were internally designated as the E30 chassis. The 325, 325i, and 325is were differentiated primarily by their engine options and trim levels. The 325 was equipped with a naturally aspirated 2.5-liter M20 four-cylinder engine producing 170 horsepower, whereas the 325i featured a fuel-injected version of the same engine delivering 170 horsepower. The 325is, on the other hand, was a sporty variant, boasting a 2.5-liter M20B25 six-cylinder engine that generated 192 horsepower. This powerplant was coupled with a five-speed manual transmission as standard, and a four-speed automatic transmission was available as an optional extra. The 325is also distinguished itself with a more aggressive body kit, including a distinctive front spoiler, side skirts, and a rear diffuser, signifying its performance intentions.

Beyond their mechanical differences, the 325, 325i, and 325is shared a common design language, characterized by a sleek and aerodynamic profile. The sedans featured a timeless design with a long hood, a raked windshield, a sloping roofline, and a short rear deck. Inside, the cabins were designed for driver focus, with a simple dashboard layout, prominent instrument cluster, and comfortable seats. The E30 platform, upon which these models were built, was renowned for its precise handling, responsive steering, and balanced suspension. These attributes, coupled with the powerful engine options, made the 325, 325i, and 325is popular choices for both daily driving and spirited driving experiences. The 325i and 325is further added to their allure with their advanced electronic systems, including fuel injection and electronic ignition, making them reliable and efficient companions for the era. The BMW 325, 325i, and 325is cemented the BMW 3 Series' reputation as a benchmark for compact executive sedans, and they continue to be coveted by enthusiasts today for their classic design, driving performance, and enduring legacy.