(3) Install dummy couplings (4) on service (1) and emergency (2) gladhands.
(4) Disconnect electrical cable from connector (3).
Uncoupling Semitrailer From Towing Vehicle
(5) Release semitrailer kingpin from towing vehicle fifth wheel.
(6) Slowly drive towing vehicle forward until semitrailer is clear of approach
Fifth Wheel and Approach Ramps