New Holland LS140 Workshop Manual page 433

The following are common terms used in electrical
diagnostics and how they may affect the circuit and
electrical components.
The term "OPEN CIRCUIT" means there is no
voltage getting from the control point to the operating
point. This means the wire carrying the voltage is
open/broken and voltage cannot continue to flow.
The effect is the operating component will not
function.
The term "SHORT CIRCUIT" means there is voltage
being lost to another component wire or to ground.
This could result in the wrong component being
operated or the blowing of the circuit protection
device (fuse or breaker).
The term "GROUNDED CIRCUIT" means the
voltage is going directly to ground and usually results
in no component operation
fuse-breaker.
To test for an "OPEN CIRCUIT," use a volt/ohm meter
and check from one end of the wire to the other. If
voltage is not present, trace the circuit from control
point to operating point until the open is found.
To test for a "SHORT CIRCUIT," use a volt/ohm meter
and check for very low resistance in different parts of
the circuit or continuity between the circuit wire and
ground.
To test for a "GROUNDED CIRCUIT," use a volt/ohm
meter and check for continuity between the circuit
wire and ground.
Drilling Holes In Overhead Dash, Electronic
Instrument Cluster (EIC) Board, and Ignition
Switch Area
Always install the rearview mirrors as shown in the
mirror instruction sheet. Otherwise, you must unhook
the negative battery cable and remove the EIC board
panel, 1, and ignition switch panel, 2, from the
overhead dash. If holes and attaching screws are
installed into the dash area, 3, make sure the screws
will not contact the EIC board, the ignition switch, or
wiring, as electrical system damage will occur.
IMPORTANT: Failure to unhook the negative battery
cable before removal of the EIC board or switch may
result in an accidental
component damage.
IMPORTANT: Retaining hardware contacting the
EIC board or switch may cause an electrical short,
damaging the skid steer electrical system.
SECTION 55 - ELECTRICAL SYSTEM
and/or blown
grounding, causing
55-8
The following chart shows the abbreviations for the
various wire colors used to identify the electrical
circuits.
WIRE ABBREVIATIONS TO INDICATE WIRE
COLOR
WIRE
COLOR DESIGNATION
Black B
Dark DKBL
Blue
Light LTBL
Blue
Dark DKBR
Brown
Gray GY
Dark DKGN
Green
Light LTGN
Green
1
3
Copyright © New Holland
WIRE
COLOR DESIGNATION
White W
Orange O
Pink PK
Purple PU
Red R
Tan T
Yellow Y
2
1