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Standard
Circuit/terminal Designations
Circuit
Number
Circuit Description
Most Common
Wire Color
15
Powered when ignition switch is
Black (BK)
in
"On"
or "Start" positions
X
Load-reduction circuit
Black/Yellow (BKIY)
Powered by load-reduction relay when
ignition switch in in "On" position
(Not powered in "Start" position)
30
Battery positive(+) Voltage
Red (R)
Powered whenever battery
is connected
31
Ground (GND) or battery negative(-)
Brown (BR)
50
Powered only when ignition
Red/Black (RISK)
switch is in
"Start"
position
8+
From generator (GEN)
Red (R)
Charging Voltage to battery
D+
Generator (GEN) warning light and
field energizing circuit
85
Ground (GND) (-) side of switching relay
Brown (BR)
86
Power-input(+) side of switching relay
87
Relay change-over contact
vi How to read
wiring
diagrams
I
General Information
l
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