KKK-A-1822 E
commercially produced, protection for these circuits may be provided with other types of circuit
breakers. All circuit breakers shall be securely mounted, easily removable, and readily accessible
for inspection and service. All electrical and electronic components, switches, connectors, circuit
breakers, lamps, and indicators, including the vehicle batteries, shall be marked with an easily
read identification code number and/or letter. Complete, highly legible, wiring diagrams and
schematics, including identification codes and parts list for the ambulance's standard and optional
equipment furnished, shall be included in the service manual and be supplied with each ambulance
in accordance with paragraph 6.8
3.7.2.2 PRINTED CIRCUITS.
When printed circuits are utilized, they shall conform to SAE J771. Printed circuit
boards shall be securely mounted and protected from physical damage and accidental
shorts. Printed circuit board connections and components shall conform to all other
specification requirements.
3.7.3
GROUNDING.
A. Dedicated grounds for all appliances, circuits, etc. shall be furnished. The use of appliance
mounting screws/hardware shall not be used for grounding purposes unless specifically
designed for such use by the appliance manufacturer.
B. To provide RF grounding and minimize potential interference with chassis manufacturer's
computers, the module and chassis cab shall be connected to the chassis frame with a
separate dedicated minimum 19 mm (3/4"), braided ground strap with soldered ends that
are secured to cleaned metal surfaces on the body and frame with star washers, etc. To
prevent corrosion, both ends of the attached ground strap shall then be sealed with either
rustproofing compounds or non-hardening battery terminal sealer. (Note: Regular stranded
copper wire, while providing a DC ground, does not provide RF grounding.)
3.7.4
WINDSHIELD WIPERS AND WASHERS.
Vehicle shall be equipped with dual, electric, multi-speed, windshield wipers and washer
complying with FMVSS 104. When specified (see 6.2-p), the OEM intermittent wipers
shall be furnished.
3.7.5
HORNS.
The chassis manufacturer's dual electric horns shall be furnished. (see siren section for
switching arrangements, (3.14.6)).
3.7.6
ELECTRICAL GENERATING SYSTEM (REFERENCE FIGURE 5A or 5B ).
Unless otherwise specified (see 6.2-q), the ambulance shall, when available from the chassis
manufacturer, be equipped with standard or optional generating system designed for
ambulance applications, and shall be nominally rated at 14 volts, with a minimum under hood
temperature of 93° C (200° F). As a minimum, the generating system shall be capable of
supplying at its regulated voltage, at 93° C (200° F), the continuous electrical load which consists
of the following electrical equipment and systems: engine/transmission control system; headlights
(low beam); all FMVSS 108 lights; windshield wipers (low speed); cab air conditioning (at
coldest setting with highest blower speed); radio in receiving mode (or equal load, if not equipped);
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