This SAE Recommended Practice provides general guidelines on the material selection, construction and qualification of components and wiring systems used to construct wiring systems for Heavy Duty Vehicles The guidelines are limited to primary wiring systems of less than 50 V and includes cable sizes American Wire Gage 20 to AWG 4 on heavy-duty on-highway trucks. The document identifies appropriate operating performances requirements. This document excludes the male to female connection of the SAE J560 connectors.
This recommended practice will be revised to use some more current terms. Test practices will be updated where needed and a general updating will take place. Diesel Exhaust Fluid exposure is being better defined as well as using AWG to specify the size of wire as 2mm sizing has been discovered to be somewhat ambiguous.