This course is a study of the basic electrical and electronic principles and the relationship to fuel systems used on light duty transportation vehicles. Problem solving strategies involving electrical forces will be stressed as fuel delivery problems are commonplace in everyday applications of on/off road vehicles. Use of diagnostic electrical test equipment is a major component of this course. An in-depth study of origin and refining process of fuels and the applications to vehicles used in the transportation field is included. Both analogue and digital amplitudes are integral to the understanding of how electrical/electronic systems function in everyday use to control the fuel trim supplied to the internal combustion engine. Explanation of system and function control mechanisms will be explored in detail.