Recommended Practice for Identification of Standardized Truck and Tractor Electrical Circuits

This SAE Recommended Practice defines a recommended practice for implementing circuit identification for the circuits of the power and signal distribution systems of the Class 8 trucks and tractors. This document provides a description of a supplemental circuit identifier that shall be utilized in conjunction with the original equipment manufacturer¿s primary circuit identification as used in wire harnesses but does not include electrical or electronic devices which have pigtails. The supplemental circuit identifier is crossreferenced to a specified subsystem of the power and signal distribution system identified in Section 5.

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Current & Historical versions of this standard
Standard	Date published	?Status
J2191_201001	2010-01-07	Revised
J2191_200401	2004-01-30	Revised
J2191_200212	2002-12-13	Reaffirmed
J2191_199702	1997-02-01	Issued