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Trade No. 1662. These lights shall be installed as far apart as possible for turn-signal operation
as well as stop and taillight indication. Any legal requirement for the service stoplights to be
illuminated whenever the brake system goes into "emergency" shall not be considered
applicable. The blackout combination light shall be installed inboard or below the service
combination lights. These lights shall be installed and centered behind 6-inch diameter holes and
shall be flush with the service combination lights. Shielding shall be provided to prevent damage
from road splash. Wiring. The semitrailer wiring shall be routed within the framing members
whenever practical. Clamps, grommets, and loom shall be provided to prevent whipping,
chafing, or other mechanical damage. Wiring shall be fastened at intervals not to exceed 3 feet.
Two or more wires in the same routing shall be bound together into a harness with one-half
over-lapping wraps of plastic electrical tape, or covered with tubing insulation. Splices shall be
waterproof. Splices shall be either soldered and insulated or mechanical splicing devices shall be
furnished at splice points. These splicing devices shall be fastened to the semitrailer members
and the interior waterproofed with silicone lubricant. All circuits shall be identified by number
coding as specified in figure 3, using circuit number bands near each connection. Friction
connectors shall be lubricated with silicone lubricant prior to assembly, and shall be secured to
the semitrailer with spring clips to prevent whipping. A waterproof, electrical, semitrailer-type
commercial nosebox with insulated terminal strips and terminals; or two junction boxes shall be
furnished. The nosebox or junction boxes shall contain connectors for all circuits and the
nosebox shall additionally house the three circuit breakers. These components shall be located in
the drawbar area. From the connections the harness shall be routed rearward along the frame
side member to the unit lights. The service combination lights shall be equipped with friction
connectors on the two live, pigtail leads, and a spade connector on the grounding pigtail lead for
bolting to the frame. Reflectors. Reflectors shall be furnished and installed as required by ICC
regulations. In addition, two amber reflectors shall be installed on the front corners within the
same height range as those on the side.
3.14.7 Landing gear and stabilizing jacks. The semitrailer shall be equipped with not less
than four screw-action stabilizing jacks and a semitrailer landing gear permanently attached to
the chassis. The stabilizing jacks shall conform to GGG-J-51, type I, class 3, diameter of the
screw not less than 2-1/2 inches, and rated capacity 15 tons. The jacks shall have steel

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