49
PLUG LOCA
TION
2 PIN PLUG (RPM)
PIN
RPM IN
RPM GND
MAG IN
MAG REF
D+
PLUG LOCA
TION
P
IN
POWER + DC
+
RELA
Y
BOARD
D+
BOTT
OM
PIN
E ST
OP
BI1
7 PIN PLUG (BINAR
Y
INPUTS)
BO1
C1 +12VDC
LOCA
TION
LOCA
TION
LOCA
TION
CONTROL
POWER
SWITCH
RD/BK
BLK
RD/BK
LARGE 4 PIN PLUG (GEN VOL
T
AGE)
PHASE A
VOL
T
AGE
PHASE B VOL
T
A
GE
PHASE C VOL
T
AGE
LOCA
TION
L1
PIN
PLUG LOCA
TION
NEUTRAL
L2
L3
N
PHASE C CURRENT
PHASE B CURRENT
PHASE A
CURRENT
4 PIN PLUG (GEN CURRENT)
PLUG LOCA
TION
L3
L2
L1
PIN
LOCA
TION
PHASE GND
COM
PLUG LOCA
TION
C+
ST
AR
TER
RELA
Y
B+
6
7
8
9
10
5
GTB
1
4
3
2/B
GROUND TERMINAL
BLOCK
MJB
RD/VI
12 V
-+
BA
TTER
Y
BLK
GROUND T
O
ENGINE BLOCK
11
12/B
15A
BR/WT
YL/WT
OR/WT
GRN
WHT
ORN
YEL
BRN
GR
Y
WT/VI
GY/OR
BLK
YEL
RED
RD/WT
RED
WT/VI
BLK
YEL
BLK
RED
RD/WT
BLK
BLK
RED
GN/YL
BLK
TB
2
1
REMOTE ST
AR
T
CONT
ACTS
ORN
RD/YL
ORN
FUEL
LEVEL
GROUND
TO
T
A
N
K
WT/VI
21-PIN G
"RUN"
DEUTSCH
RD/VI
DEUTSCH 21-PIN J AL
T.
EXCITE
ORN
MOT
O
R
ST
AR
TER
B+
F+
RED
LUG DOOR
SAFETY
ORG
RED
SWITCH
22
21
NC
NC
C
LOCA
TION
W
A
TER IN
FUEL
IN
OIL
IN
PIN
3 PIN PLUG (ANALOG INPUTS)
PLUG LOCA
TION
WHT
AI1 (OIL)
AI3 (FUEL)
AI2 (TEMP)
REMOTE ST
AR
T
BI2
BI3
BI4
BI5
BI6
OPEN
OPEN
LOW COOLANT
OPTION
C2 +12VDC
BO2
SR
T
FUE
BO3
BO4
BO5
BO6
OPEN
OPEN
OPEN
OPEN
GND ON BOARD
BO2 FUEL
BO1 ST
AR
T
COM
L
H
ECU COM
PIN
LOCA
TION
PLUG LOCA
TION
ECU H
3 PIN PLUG
ECU L
SHIELD
BLK
GR
Y
DEUTSCH 21-PIN F CAN-SHLD
CAN-L
21-PIN U
DEUTSCH
DEUTSCH 21-PIN V
CAN-H
BLK
Shield not connected
Cut back and
T
ape
RED
TO
GEN FIELD
LOW
COOLANT
GY/BK
BLK
AL
T
B+
RED
GY/BK
BLK
CT
-1
CT
-2
CT
-3
WHT
WHT
GRN
BLK
BLK
BLK
BRN
YEL
ORN
L1
L2
L3
SHUNT
WHT
GRN
WHT
SPLICE
SPLICE
YEL
ORN
MAIN
BREAKER
L0
BOTT
OM
BOTT
OM
TO
P
TO
P
BOTT
OM
LEFT
SIDE
GN/YL
GN/YL
RD/WT
RD/WT
10
1
2
3456789
BLK
OPTIONAL
BA
TTER
Y
DISCONNECT
X
TU
V
W
MN
P
R
S
HJ
K
L
C
DE
F
G
A
B
GRY
SHLD
RED
BLK
GEN
F-
RED
GEN
F+
E-ST
OP
SWITCH
RD/WT
ORN
GN/YL
GRY
E-ST
OP
SWITCH
NO
NO
13
14
13
14
BLK
RED
RED
F-
BLK
TO
VOL
T
AGE
REGULA
T
O
R
RED
RED
SHLD
GRY
BLK
RD/VI
GY/BK
BLK
GRY
GN/YL
ORN
RD/WT
BLK
BLK
ORN
ORN
VIO
BLK
GRN
BLK
OPEN
POWER - DC
-
BO7
OPEN
RD/YL
RD/WT
BI7
OPEN
MDC CONTROLLER
90208, ORG 7.25.08
*
NOT
REQUIRED WITH JOHN DEERE ECU ENGINE
DC WIRING DIAGRAM: MMG150-MMG170