Suggested SAE Standard for Identifying Automotive Wiring Circuits

Methods of identifying electrical circuits the motor vehicle industry have become frustrating and time-consuming with today's complex designs. Skilled mechanics of one motor vehicle manufacturer are faced with a complete change in circuit identification when servicing vehicles of another manufacturer. Since no industry-wide standard exists, the public is usually forced to seek servicing of electrical problems directly from the manufacturer.

The purpose of this paper is to describe a new simplified approach to motor vehicle electrical wiring circuit identification which could become an automotive industry standard.