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Page Title:
Conversion to 24 volt electrical system |
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|  MIL-K-687E
TABLE II.
Vehicular electrical system. (continued)
Requirements
Description
Quantity Per
I
Heavy duty or fleet service type
AR
Lamp lenses and
I bulbs
bulbs, bulbs mounted in vibration-
protected sockets with insulators
end stainless steel or rubber bulb
tension devices.
8 ea min
Reflectors
2 on each corner, round type, securely
fastened by bolts, screws or rivets.
I
Wiring diagram
1 ea
Plate furnished on trailer per TTMA
I
Bulletin #65.
I
I
.
3.6.14.1 Conversion to 24 volt electrical system. When specified (see 6.2),
the kettle trailer shall be equipped with a military compatible 24-volt service
lighting system to provide towing capability for the military design trucks as
well as commercial trucks. In addition to the TTMA 7-contact plug, the trailer
shall be equipped with the following military intervehicle components:
a. Military 12-contact plug - MS75020-l.
b. Military vehiclular cable - MIL-C-13486/12 or SAE JI067 seven
conductor jacketed cable.
The military plug and cable or SAE cable shall be the same length as the TTMA
plug and cable and both shall be labeled with identification plates for 24-volts
and 12-volts respectively, negative ground. The military 24-volt inter-
vehicular cable shall be routed into a splashproof stud and nut type connection
box, equipped with SAE J553 circuit breakers, protecting live circuits B, E, and
J of the military service lamp portion. All unused leads of the cable shall be
insulated and sealed watertight. The military 24-volt circuits shall be
connected through replaceable resistors, for live circuits, and to the trailer
frame, for ground circuits, in accordance with table III.
11
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