Wiring Diagrams
Industrial Generator Sets
Models:
20--300 kW
(John Deere-Powered Models)
Controllers:
Decision-Makerr 550
Decision-Makerr 3000
Decision-Makerr 6000
TP-6798 6/11
Product Identification Information
Product identification numbers determine service parts.
Record the product identification numbers in the spaces
below immediately after unpacking the products so that
the numbers are readily available for future reference.
Record field-installed kit numbers after installing the
kits.
Generator Set Identification Numbers
Record the product identification numbers from the
generator set nameplate(s).
Model Designation
Specification Number
Serial Number
Accessory Number
Accessory Description
Engine Identification
Record the product identification information from the
engine nameplate.
Manufacturer
Model Designation
Serial Number
Controller Identification
Record the controller description from the generator set
operation manual, spec sheet, or sales invoice.
Controller Description
Introduction
This manual provides wiring diagrams for the
20--300 kW generator sets equipped with one of the
following controllers:
D Decision-Makerr 550
D Decision-Makerr 3000
Information in this publication represents data available
at the time of print. Kohler Co. reserves the right to
change this publication and the products represented
without notice and without any obligation or liability
whatsoever.
D Decision-Makerr 6000 (100--300 kW)
Service Assistance
For professional advice on generator set power
requirements and conscientious service, please contact
your nearest Kohler distributor or dealer.
D Consult the Yellow Pages under the heading
GeneratorsElectric.
D Visit
the Kohler Power Systems website at
KohlerPower.com.
D Look at the labels and stickers on your Kohler product
or review the appropriate literature or documents
included with the product.
D Call toll free in the US and Canada 1-800-544-2444.
D Outside the US and Canada, call the nearest regional
office.
Headquarters Europe, Middle East, Africa
(EMEA)
Kohler Power Systems
3 rue de Brennus
93200 Saint Denis
France
Phone: (33) 1 49 178300
Fax: (33) 1 49 178301
China
North China Regional Office, Beijing
Phone: (86) 10 6518 7950
(86) 10 6518 7951
(86) 10 6518 7952
Fax: (86) 10 6518 7955
East China Regional Office, Shanghai
Phone: (86) 21 6288 0500
Fax: (86) 21 6288 0550
India, Bangladesh, Sri Lanka
India Regional Office
Bangalore, India
Phone: (91) 80 3366208
(91) 80 3366231
Fax: (91) 80 3315972
Japan, Korea
North Asia Regional Office
Tokyo, Japan
Phone: (813) 3440-4515
Fax: (813) 3440-2727
Latin America
Latin America Regional Office
Lakeland, Florida, USA
Phone: (863) 619-7568
Fax: (863) 701-7131
Asia Pacific
Power Systems Asia Pacific Regional Office
Singapore, Republic of Singapore
Phone: (65) 6264-6422
Fax: (65) 6264-6455
TP-6798 6/11
Introduction
Notes
Service Assistance
TP-6798 6/11
Wiring Diagrams
Use the Wiring Diagram Cross-Reference chart to
determine the wiring diagram version number for a
given model number and spec number. Then find that
version number and the controller type on the Wiring
Diagrams Reference chart to determine the wiring
diagram numbers for your unit. Refer to Controller
Identification for controller type identification, if
necessary.
Wiring Diagram Cross-Reference
Generator Set
Model No.
Hz
Generator Set Spec No.
20REOZJC
60
GM73381-GA5
1-1 or 1-2
30REOZJC
60
GM73381-GA6
1-1 or 1-2
40REOZJC
60
GM73881-GA3
2-1 or 2-2
50REOZJD
60
GM79513-GA2
60REOZJD
60
GM79513-GA1
80REOZJF
60
GM81567-GA1, -GA2, -GA3, -GA4
100REOZJF
60
GM81567-GA5, -GA6
125REOZJG
60
GM79239-GA1, -GA2
150REOZJF
60
GM81645-GA1, -GA2
180REOZJF
60
GM81290-GA1
200REOZJF
60
GM81290-GA2
230REOZJE
60
GM66100-GA4
250REOZJE
60
GM66100-GA5
275REOZJE
60
GM66100-GA6
300REOZJ
60
GM66100-GA7
Controller Description
Decision-Makerr 550 Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Sheet 2
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Alternator Reconnections
4-Lead
12-Lead
Wiring Diagram
Version No.
Version 1-1
Page
Version 1-2
Page
GM60084A-E
GM60084B-E
51
52
GM78237AGM78237B-
62
63
ADV-7447A-D
ADV-7447B-D
14
15
ADV-8036AADV-8036B-
24
25
GM16088A-H
GM16088B-H
47
48
GM78247A-A
GM78247B-A
71
72
GM70301A-B
GM70301B-B
56
57
GM78238AGM78238B-
64
65
ADV-7714-B
17
ADV-8037-
26
GM67191-B
53
GM78246-
70
ADV-5875A-M
ADV-5875B-M
11
12
ADV-5875A-M
ADV-5875B-M
11
12
Note: Use Version 1-1 with Control and Harness Module Nos. GM59851-MA1 and GM75562-MA1. Use Version 1-2 with
Control and Harness Module Nos. GM76184-MA1 and GM76185-MA1. The Module Nos. are listed on a nameplate decal
located on the generator set controller or junction box.
TP-6798 6/11
Wiring Diagrams
Controller Description
Decision-Makerr 550 Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Sheet 2
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Alternator Reconnections
4-Lead
12-Lead
Version 2-1
Page
Version 2-2
Page
GM58940A-D
GM58940B-D
49
50
GM78237AGM78237B-
62
63
ADV-7425-B
13
ADV-8036AADV-8036B-
24
25
GM16088A-H
GM16088B-H
47
48
GM78247A-A
GM78247B-A
71
72
GM69527A-B
GM69527B-B
54
55
GM78238AGM78238B-
64
65
ADV-7691--B
16
ADV-8037-
26
GM67191-B
53
GM78246-
70
ADV-5875A-M
ADV-5875B-M
11
12
ADV-5875A-M
ADV-5875B-M
11
12
Note: Use Version 2-1 with Control and Harness Module Nos. GM57157-MA3 and GM69855-MA1. Use Version 2-2 with
Control and Harness Module Nos. GM76186-MA1 and GM76187-MA1. The Module Nos. are listed on a nameplate decal
located on the generator set controller or junction box.
Controller Description
Decision-Makerr 550
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Alternator Reconnections
4-Lead
12-Lead
Wiring Diagrams
Version 3
Page
GM78239AGM78239B-
66
67
ADV-8038-
27
GM78247A-A
GM78247B-A
71
72
Controller Description
Decision-Makerr 550
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Sheet 2
GM78240AGM78240B-
68
69
ADV-8039-
28
GM78246-
70
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
ADV-5875A-M
ADV-5875B-M
11
12
Alternator Reconnections
4-Lead
12-Lead
Version 4
Page
GM79689AGM79689B-
78
79
ADV-8040-
29
GM78247A-A
GM78247B-A
71
72
GM79690AGM79690B-
80
81
ADV-8041-
30
GM78246-
70
ADV-5875A-M
ADV-5875B-M
11
12
TP-6798 6/11
Controller Description
Decision-Makerr 550
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Decision-Makerr 6000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Sheet 5
Schematic Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Alternator Reconnections
4-Lead
12-Lead
TP-6798 6/11
Version 5
Page
GM79689AGM79689B-
78
79
ADV-8040-
29
GM78247A-A
GM78247B-A
71
72
GM79690AGM79690B-
80
81
ADV-8041-
30
GM78246-
70
Controller Description
Decision-Makerr 550
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
GM81336AGM81336BGM81336CGM81336DGM81336E-
90
91
92
93
94
ADV-8200AADV-8200BADV-8200CADV-8200D-
35
36
37
38
Decision-Makerr 6000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Sheet 5
Schematic Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
ADV-5875A-M
ADV-5875B-M
11
12
Alternator Reconnections
4-Lead
12-Lead
Version 6
Page
GM79692AGM79692B-
82
83
ADV-8042-
31
GM78247A-A
GM78247B-A
71
72
GM79693AGM79693B-
84
85
ADV-8043-
32
GM78246-
70
GM81337AGM81337BGM81337CGM81337DGM81337E-
95
96
97
98
99
ADV-8201AADV-8201BADV-8201CADV-8201D-
39
40
41
42
ADV-5875A-M
ADV-5875B-M
11
12
Wiring Diagrams
Controller Description
Decision-Makerr 550
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Decision-Makerr 6000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Sheet 5
Schematic Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Alternator Reconnections
4-Lead
12-Lead
Wiring Diagrams
Version 7
Page
GM79934AGM79934B-
86
87
ADV-8049-
33
GM78247A-A
GM78247B-A
71
72
GM79935AGM79935B-
88
89
ADV-8050-
34
GM78246-
70
Controller Description
Decision-Makerr 550
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
Sheet 2
Decision-Makerr 3000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Schematic Diagram
Sheet 1
Accessory Connections
Sheet 1
GM81338AGM81338BGM81338CGM81338DGM81338E-
100
101
102
103
104
ADV-8225AADV-8225BADV-8225CADV-8225D-
43
44
45
46
Decision-Makerr 6000
Controller
Point-to-Point Wiring Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
Sheet 5
Schematic Diagram
Sheet 1
Sheet 2
Sheet 3
Sheet 4
ADV-5875A-M
ADV-5875B-M
11
12
Alternator Reconnections
4-Lead
12-Lead
Version 8
Page
GM75953A-B
GM75953B-B
58
59
ADV-7932-A
18
GM78247A-A
GM78247B-A
71
72
GM77079AGM77079B-
60
61
ADV-7933-
19
GM78246-
70
GM78254A-C
GM78254B-C
GM78254C-C
GM78254D-C
GM78254E-C
73
74
75
76
77
ADV-7934A-B
ADV-7934B-B
ADV-7934C-B
ADV-7934D-B
20
21
22
23
ADV-5875A-M
ADV-5875B-M
11
12
TP-6798 6/11
Controller Identification
Decision-Makerr 550 Controller
Decision-Makerr 3000 Controller
Decision-Makerr 6000 Controller
TP-6798 6/11
Controller Identification
Notes
10
Controller Identification
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100 Wiring Diagrams
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104 Wiring Diagrams
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Notes
106
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KOHLER CO. Kohler, Wisconsin 53044
Phone 920-457-4441, Fax 920-459-1646
For the nearest sales/service outlet in the
US and Canada, phone 1-800-544-2444
KohlerPower.com
TP-6798 6/11
E 2011 by Kohler Co. All rights reserved.
Kohler Power Systems
Asia Pacific Headquarters
7 Jurong Pier Road
Singapore 619159
Phone (65) 6264-6422, Fax (65) 6264-6455
