This module on the automotive electrical system is the fourth of six (CE 028 296-301) in the auto mechanics course of a bilingual skills training program (A Vocabulary Development Workbook is available as CE 028 294.) The course is designed to furnish theoretical and laboratory experience. Module objectives are for students to develop trade-related Spanish/English vocabulary; to describe the basics of electricity; to name the five main groups making up the automotive electrical system; to describe the parts and functions of the battery, starting motor, and charging system; and to name the most common problems of the electrical system. Contents include list of module objectives; pretest; six sections on (1) auto electrical system, (2) its parts, (3) battery, (4) starting motors, (5) charging system, and (6) problems of the electrical system; posttest; and English/Spanish vocabulary list. Each section is organized into this format: instructions, vocabulary, and concepts (statements or questions to direct reading) presented in English and Spanish; readings; and worksheets to evaluate comprehension of the trade-related reading material. Worksheets also cover these areas: vocabulary, definitions, word attack skills, spelling, writing skills, and application of terminology to the trade area. (YLB)