TITLE 49 - TRANSPORTATION

SUBTITLE B - OTHER REGULATIONS RELATING TO TRANSPORTATION

CHAPTER III - FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION

SUBCHAPTER B - FEDERAL MOTOR CARRIER SAFETY REGULATIONS

PART 393 - PARTS AND ACCESSORIES NECESSARY FOR SAFE OPERATION

subpart b - LAMPS, REFLECTIVE DEVICES, AND ELECTRICAL WIRING

393.28 - Wiring systems.

Electrical wiring shall be installed and maintained to conform to SAE J1292Automobile, Truck, Truck-Tractor, Trailer, and Motor Coach Wiring, October 1981, except the jumper cable plug and receptacle need not conform to SAE J560. The reference to SAE J1292 shall not be construed to require circuit protection on trailers. (See 393.7(b) for information on the incorporation by reference and availability of this document.) [70 FR 48047, Aug. 15, 2005]