SAE J849:2003 pdf download

SAE J849:2003 pdf download Connection and Accessory Locations for Towing Multiple Trailers
1Scope—This SAE Recommended Practice establishes the recommended locations for the air brake and electrical connections for towing multiple trailers. lt applies to all commercial trailers except drop frame andcar haul types.
2.References
2.1Applicable Publications—The following publications form a part of the specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply.
2.1.1 SAE PUBLICATIONS—Available from SAE,400 Commonwealth Drive, Warrendale, PA 15906-0001.
SAE J318——Automotive Air Brake Line Couplers (Gladhands)
SAE J560—Seven-Conductor Electrical Connector for Truck-Trailer Jumper Cable
SAE J702—Brake and Electrical Connection Locations—Truck-Tractor and Truck-Trailer
2.2 Related Publications—The following publications are provided for information purposes only and are not a equired part of this document.
2.2.1 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)PuBLICATION—Available from lSo Copyright Office,Case postale 56,CH-1211 Geneva.
ISO 4009 “Commercial Vehicles—Location of electrical and pneumatic connections between towing vehicles and trailers”
3.Connection and Mounting Structure—Connection and mounting structure should contorm the dimensional parameters of Figures 1 and 2 and must withstand normal use without residual deformation to the mounting ortrailer structure. In the case of trailers designed for use with C-dollies, refer to Figure 3.
4. Brake and Electrical Connections
4.1 Connection Location at Back of Trailer (Standard)—Brake and electrical connections should be located as
shown in Figure 1 . Any auxiliary electrical connectors should be mounted just in-board from the J560
connector.
4.2 Connection Location at Back of Trailer (C-Dollies)—Brake and electrical connections should be located as shown in Figure 3. Any auxiliary electrical connectors should be mounted just in-board from the J560 connector. All connection locations should be on the roadside of the underride guard, for ease of access.
4.3 Connection Location at Front of Trailer(s)—Brake and electrical connections at the front of a trailer should be located in accordance with SAE J702.
4.4 Electrical Connections—The electrical connection should meet the provisions contained in SAE J560.
4.5 Brake Connection—The air brake connections should meet the provisions contained in SAE J318.