Power outlet receptacle provides electrical power for lights on tailers being towed.
Towing pintle hook is opened to attach trailer lunette, towing bar or chain. When used for
towing, the pintle hook must always be locked by pin attached to chain.
Trailer air cutoff cock handles are turned to release compressed air into the trailer
Trailer air couplings provide
airbrake system connections for trailer
12 Air reservoir drain valve is opened to
release pressure from the air system
and to drain accumulated water from
reservoirs. Valve is located under
left-hand running board.