Helm Architecture Diagrams: Single Helm
System Architecture Diagrams
Section 6A - Helm Architecture Diagrams: Single Helm
Table of Contents
Single‑Engine.....................................................................6A-2 TESH DTS ‑ Dual Console ERC...............................6A-16
SESH DTS ‑ Panel Mount or Single Console ERC.... 6A-2 TESH DTS ‑ Zero Effort ERC................................... 6A-18
SESH DTS ‑ Zero Effort ERC..................................... 6A-4 TESH Joystick /ESH ‑ Dual Console ERC................6A-20
SESH ESH ‑ Panel Mount or Single Console ERC.... 6A-6 TESH Joystick/ESH ‑ Zero Effort ERC..................... 6A-22
Dual‑Engine....................................................................... 6A-8 Quad‑Engine....................................................................6A-24
DESH DTS ‑ Dual Console ERC................................ 6A-8 QESH DTS ‑ Dual Console ERC.............................. 6A-24
DESH DTS ‑ Zero Effort ERC...................................6A-10 QESH DTS ‑ Zero Effort ERC...................................6A-26
DESH Joystick/ESH ‑ Dual Console ERC................ 6A-12 QESH Joystick/ESH ‑ Dual Console ERC................ 6A-28
DESH Joystick/ESH ‑ Zero Effort ERC.....................6A-14 QESH Joystick/ESH ‑ Zero Effort ERC.....................6A-30
Triple‑Engine....................................................................6A-16
6
A
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-1
Helm Architecture Diagrams: Single Helm
Single‑Engine
SESH DTS ‑ Panel Mount or Single Console ERC
16
15
14
13
12
11
2 3 4
X P H
10
1
5
6 9
8
7
71158
Page 6A-2 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to engine) 9 - Diagnostic port
2 - CAN X terminator 10 - Ignition key switch
3 - CAN P terminator 11 - Lanyard stop switch (single console ERC only)
4 - CAN H terminator 12 - Green ERC connector (starboard)
5 - Gauge power relay 13 - Blue ERC connector (CAN P)
6 - Single‑engine, single‑helm harness 14 - Warning horn
7 - Accessory power 15 - Single console ERC
8 - Junction box 16 - Panel mount ERC
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-3
Helm Architecture Diagrams: Single Helm
SESH DTS ‑ Zero Effort ERC
22
18 19
17 20
21
14
13
12
16
15
11
LCM
2 3 4
X P H
10
1
5
6
9
8
7
71159
Page 6A-4 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to engine) 12 - Green ERC connector (starboard)
2 - CAN X terminator 13 - Blue ERC connector (CAN P)
3 - CAN P terminator 14 - Warning horn
4 - CAN H terminator 15 - Legacy control module (LCM)
5 - Gauge power relay 16 - Single‑engine LCM harness
6 - Single‑engine, single‑helm harness 17 - Start/stop connector with weather cap
7 - Accessory power 18 - Lever 1 connector
8 - Junction box 19 - Lever 2 connector
9 - Diagnostic port 20 - Handle connector with weather cap
10 - Ignition key switch 21 - Trim connector
11 - Lanyard stop switch 22 - Zero Effort ERC
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-5
Helm Architecture Diagrams: Single Helm
SESH ESH ‑ Panel Mount or Single Console ERC
16
15
18
14 17
19
13
12
11
2 3 4
X P H
10
1
9
5 20
6
21
8
22
23
7
24
71157
Page 6A-6 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to engine) 13 - Warning horn
2 - CAN X terminator 14 - CAN H adapter (orange)
3 - CAN P terminator 15 - Weather cap (connector not used)
4 - CAN H terminator 16 - Electric steering helm
5 - Gauge power relay 17 - CAN P adapter (blue)
6 - Single‑engine, single‑helm harness 18 - Single console ERC (ES)
7 - Accessory power 19 - Panel mount ERC (ES)
8 - Junction box 20 - GPS/IMU assembly
9 - Ignition key switch 21 - Diagnostic port
10 - Lanyard stop switch (single console ERC only) 22 - VesselView Link
11 - Green ERC connector (starboard) 23 - VeselView (or equivalent MFD)
12 - Blue ERC connector (CAN P) 24 - NMEA® 2000 network
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-7
Helm Architecture Diagrams: Single Helm
Dual‑Engine
DESH DTS ‑ Dual Console ERC
17
16
15
14
13
2
12
X
3 11
10
9
3 4 6
X H
5
8
1
7
71162
Page 6A-8 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 10 - Ignition key switches
2 - 14‑pin data harness (to port engine) 11 - Lanyard switch diode pack
3 - CAN X terminators 12 - Lanyard stop switch
4 - CAN H terminator 13 - Brown ERC connector (port)
5 - Gauge power relay 14 - Green ERC connector (starboard)
6 - Dual‑engine, single‑helm harness 15 - Blue ERC connector (CAN P)
7 - Accessory power 16 - Warning horn
8 - Junction box 17 - Dual‑engine ERC
9 - Diagnostic port
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-9
Helm Architecture Diagrams: Single Helm
DESH DTS ‑ Zero Effort ERC
17
19 20
18 21 22
16
15
14 23
2 13 24
25
26
LCM
X 11
3 12 LCM
10
6 9
3 4
X H
5
8
1
7
71163
Page 6A-10 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 14 - Green ERC connector (starboard)
2 - 14‑pin data harness (to port engine) 15 - Blue ERC connector (CAN P)
3 - CAN X terminators 16 - Warning horn
4 - CAN H terminator 17 - Zero Effort ERC
5 - Gauge power relay 18 - Start/stop connectors with weather caps
6 - Dual‑engine, single‑helm harness 19 - Lever 1 connectors
7 - Accessory power 20 - Lever 2 connectors
8 - Junction box 21 - Trim diode harness
9 - Diagnostic port 22 - Trim pad
10 - Ignition key switches 23 - Trim connector
11 - Lanyard switch diode pack 24 - Dual‑engine legacy control module (LCM) harness
12 - Lanyard stop switch 25 - Port LCM
13 - Brown ERC connector (port) 26 - Starboard LCM
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-11
Helm Architecture Diagrams: Single Helm
DESH Joystick/ESH ‑ Dual Console ERC
18
17
16 19 20
15
14
13
12
2
X 10
3 11
21
9
3 4 6 22
X H 5
8
23
1
24
7
25
71160
Page 6A-12 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 14 - Blue ERC connector (CAN P)
2 - 14‑pin data harness (to port engine) 15 - Warning horn
3 - CAN X terminators 16 - CAN H adapter (orange)
4 - CAN H terminator 17 - Joystick
5 - Gauge power relay 18 - Electric steering helm
6 - Dual‑engine, single‑helm harness 19 - CAN P adapter (blue)
7 - Accessory power 20 - Dual‑engine ERC
8 - Junction box 21 - GPS/IMU assembly
9 - Ignition key switches 22 - Diagnostic port
10 - Lanyard switch diode pack 23 - VesselView Link
11 - Lanyard stop switch 24 - VesselView (or equivalent MFD)
12 - Brown ERC connector (port) 25 - NMEA® 2000 network
13 - Green ERC connector (starboard)
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-13
Helm Architecture Diagrams: Single Helm
DESH Joystick/ESH ‑ Zero Effort ERC
18
20
17
25 24
16 19 26 22
21
15
23
14
13
2 12 27
28
29
LCM
X
3 10 11 LCM
9
30
3 4 6 31
X H 5
8
1 32
33
7
34
71161
Page 6A-14 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 18 - Electric steering helm
2 - 14‑pin data harness (to port engine) 19 - CAN P adapter (blue)
3 - CAN X terminators 20 - Zero Effort ERC
4 - CAN H terminator 21 - Trim pad
5 - Gauge power relay 22 - Trim diode harness
6 - Dual‑engine, single‑helm harness 23 - Trim connector
7 - Accessory power 24 - Lever 2 connectors
8 - Junction box 25 - Lever 1 connectors
9 - Ignition key switches 26 - Start/stop connectors with weather caps
10 - Lanyard switch diode pack 27 - Dual‑engine legacy control module (LCM) harness
11 - Lanyard stop switch 28 - Port LCM
12 - Brown ERC connector (port) 29 - Starboard LCM
13 - Green ERC connector (starboard) 30 - GPS/IMU assembly
14 - Blue ERC connector (CAN P) 31 - Diagnostic port
15 - Warning horn 32 - VesselView Link
16 - CAN H adapter (orange) 33 - VeselView (or equivalent MFD)
17 - Joystick 34 - NMEA® 2000 network
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-15
Helm Architecture Diagrams: Single Helm
Triple‑Engine
TESH DTS ‑ Dual Console ERC
19
18
3 17
16
15
X
4 14
12
13
11
2 11
11
X
4
7 10
9
4 5
X H
6
1 8
71166
Page 6A-16 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 11 - Ignition key switches
2 - 14‑pin data harness (to center engine) 12 - Lanyard switch diode pack
3 - 14‑pin data harness (to port engine) 13 - Lanyard stop switch
4 - CAN X terminators 14 - Gray ERC connector (center)
5 - CAN H terminator 15 - Brown ERC connector (port)
6 - Gauge power relay 16 - Green ERC connector (starboard)
7 - Triple‑engine, single‑helm harness 17 - Blue ERC connector (CAN P)
8 - Accessory power 18 - Warning horn
9 - Junction box 19 - Triple‑engine ERC (dual console)
10 - Diagnostic port
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-17
Helm Architecture Diagrams: Single Helm
TESH DTS ‑ Zero Effort ERC
19
21 24
22 23 25 26
20
18
3
17
27
16
15 28
X 29
4 14
30
LCM
31
LCM
12
13
LCM
11
2
11
11
X 10
4
9
4 5 7
X H
6
1
8
71167
Page 6A-18 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 18 - Warning horn
2 - 14‑pin data harness (to center engine) 19 - Zero Effort ERC
3 - 14‑pin data harness (to port engine) 20 - Start/stop connectors with weather caps
4 - CAN X terminators 21 - Starboard inner (center) lever 1 connector ‑ attach
5 - CAN H terminator resistor pack #93 for configuration
6 - Gauge power relay 22 - Port and starboard lever 1 connectors
7 - Triple‑engine, single‑helm harness 23 - Port and starboard lever 2 connectors
8 - Accessory power 24 - Starboard inner (center) lever 2 connector with weather
9 - Junction box cap
10 - Diagnostic port 25 - 8‑pin to 3‑pin trim adapter harness
11 - Ignition key switches 26 - Trim pad
12 - Lanyard switch diode pack 27 - Trim connector
13 - Lanyard stop switch 28 - Triple‑engine legacy control module (LCM) harness
14 - Gray ERC connector (center) 29 - Port LCM
15 - Brown ERC connector (port) 30 - Starboard inner (center) LCM
16 - Green ERC connector (starboard) 31 - Starboard LCM
17 - Blue ERC connector (CAN P)
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-19
Helm Architecture Diagrams: Single Helm
TESH Joystick /ESH ‑ Dual Console ERC
20
19
22
18 21
17
3
16
15
14
X
4 13
11
12
10
2 23
10
10
X
4
7 24
9
25
4 5
X H
6
26
1
8
27
71164
Page 6A-20 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 15 - Green ERC connector (starboard)
2 - 14‑pin data harness (to center engine) 16 - Blue ERC connector (CAN P)
3 - 14‑pin data harness (to port engine) 17 - Warning horn
4 - CAN X terminators 18 - CAN H adapter (orange)
5 - CAN H terminator 19 - Joystick
6 - Gauge power relay 20 - Electric steering helm
7 - Triple‑engine, single‑helm harness 21 - CAN P adapter (blue)
8 - Accessory power 22 - Triple‑engine ERC (dual console)
9 - Junction box 23 - GPS/IMU assembly
10 - Ignition key switches 24 - Diagnostic port
11 - Lanyard switch diode pack 25 - VesselView Link
12 - Lanyard stop switch 26 - VesselView (or equivalent MFD)
13 - Gray ERC connector (center) 27 - NMEA® 2000 network
14 - Brown ERC connector (port)
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-21
Helm Architecture Diagrams: Single Helm
TESH Joystick/ESH ‑ Zero Effort ERC
22
20
19 27
24
18 21 23 25 26 28 29
17
3
16
15
30
14 31
X 32
4 13
33
LCM
34
LCM
11
12
LCM
10
2
10 35
10
X
4
36
9
37
4 5 7
X H
6
38
1
8
39
71165
Page 6A-22 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 21 - CAN P adapter (blue)
2 - 14‑pin data harness (to center engine) 22 - Zero Effort ERC
3 - 14‑pin data harness (to port engine) 23 - Start/stop connectors with weather caps
4 - CAN X terminators 24 - Starboard inner (center) lever 1 connector ‑ attach
5 - CAN H terminator resistor pack #93 for configuration
6 - Gauge power relay 25 - Port and starboard lever 1 connectors
7 - Triple‑engine, single‑helm harness 26 - Port and starboard lever 2 connectors
8 - Accessory power 27 - Starboard inner lever 2 connector with weather cap
9 - Junction box 28 - 8‑pin to 3‑pin trim adapter harness
10 - Ignition key switches 29 - Trim pad
11 - Lanyard switch diode pack 30 - Trim connector
12 - Lanyard stop switch 31 - Triple‑engine legacy control module (LCM) harness
13 - Gray ERC connector (center) 32 - Port LCM
14 - Brown ERC connector (port) 33 - Starboard inner (center) LCM
15 - Green ERC connector (starboard) 34 - Starboard LCM
16 - Blue ERC connector (CAN P) 35 - GPS/IMU assembly
17 - Warning horn 36 - Diagnostic port
18 - CAN H adapter (orange) 37 - VesselView Link
19 - Joystick 38 - VesselView (or equivalent MFD)
20 - Electric steering helm 39 - NMEA® 2000 network
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-23
Helm Architecture Diagrams: Single Helm
Quad‑Engine
QESH DTS ‑ Dual Console ERC
4 21
20
X 19
5
18
17
5
X 16
15
3
13
14
12
12
12
12
2
11
X 10
5
5 6
X H 8
7
9
1
71170
Page 6A-24 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 12 - Ignition key switches
2 - 14‑pin data harness (to starboard inner engine) 13 - Lanyard switch diode pack
3 - 14‑pin data harness (to port inner engine) 14 - Lanyard stop switch
4 - 14‑pin data harness (to port engine) 15 - Black ERC connector (port inner)
5 - CAN X terminators 16 - Gray ERC connector (starboard inner)
6 - CAN H terminator 17 - Brown ERC connector (port)
7 - Gauge power relay 18 - Green ERC connector (starboard)
8 - Quad‑engine, single‑helm harness 19 - Blue ERC connector (CAN P)
9 - Accessory power 20 - Warning horn
10 - Junction box 21 - Quad‑engine ERC (dual console)
11 - Diagnostic port
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-25
Helm Architecture Diagrams: Single Helm
QESH DTS ‑ Zero Effort ERC
24
22 23
21 27
28 29
25 26
4 20
19
18 31
X 30
5 17
32
16
LCM 33
5 15
X LCM
3 14
13 34
LCM 35
12
LCM
12
12
12
2 11
10
X
5
8
5 6 9
X H
7
1
71171
Page 6A-26 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 20 - Warning horn
2 - 14‑pin data harness (to starboard inner engine) 21 - Start/stop connectors with weather caps
3 - 14‑pin data harness (to port inner engine) 22 - Port inner lever 1 connector ‑ attach resistor pack #94
4 - 14‑pin data harness (to port engine) for configuration
5 - CAN X terminators 23 - Starboard inner lever 1 connector ‑ attach resistor pack
6 - CAN H terminator #93 for configuration
7 - Gauge power relay 24 - Zero Effort ERC
8 - Quad‑engine, single‑helm harness 25 - Port and starboard lever 1 connectors
9 - Accessory power 26 - Port and starboard lever 2 connectors
10 - Junction box 27 - Port inner and starboard inner lever 2 connectors with
11 - Diagnostic port weather caps
12 - Ignition key switches 28 - 8‑pin to 3‑pin trim adapter harness
13 - Lanyard stop switch 29 - Trim pad
14 - Lanyard switch diode pack 30 - Trim connector
15 - Black ERC connector (port inner) 31 - Quad‑engine legacy control module (LCM) harness
16 - Gray ERC connector (starboard inner) 32 - Port LCM
17 - Brown ERC connector (port) 33 - Port inner LCM
18 - Green ERC connector (starboard) 34 - Starboard inner LCM
19 - Blue ERC connector (CAN P) 35 - Starboard LCM
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-27
Helm Architecture Diagrams: Single Helm
QESH Joystick/ESH ‑ Dual Console ERC
22
21
24
20 23
19
4
18
17
X
5 16
15
5
X 14
12
3 13
11
11 25
11
11
26
2
10
27
X
5
28
8
5 6
9
X H
7
1 29
71168
Page 6A-28 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 16 - Brown ERC connector (port)
2 - 14‑pin data harness (to starboard inner engine) 17 - Green ERC connector (starboard)
3 - 14‑pin data harness (to port inner engine) 18 - Blue ERC connector (CAN P)
4 - 14‑pin data harness (to port engine) 19 - Warning horn
5 - CAN X terminators 20 - CAN H adapter (orange)
6 - CAN H terminator 21 - Joystick
7 - Gauge power relay 22 - Electric steering helm
8 - Quad‑engine, single‑helm harness 23 - CAN P adapter (blue)
9 - Accessory power 24 - Quad‑engine ERC (dual console)
10 - Junction box 25 - GPS/IMU assembly
11 - Ignition key switches 26 - Diagnostic port
12 - Lanyard switch diode pack 27 - VesselView Link
13 - Lanyard stop switch 28 - VesselView (or equivalent MFD)
14 - Black ERC connector (port inner) 29 - NMEA® 2000 network
15 - Gray ERC connector (starboard inner)
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-29
Helm Architecture Diagrams: Single Helm
QESH Joystick/ESH ‑ Zero Effort ERC
27
22
25 26
21 24 30
31 32
20 23 28 29
4
19
18
17 34
X 33
5 16
35
15
LCM 36
5
X 14 LCM
3 13
12 37
LCM 38
11
LCM
11
11
11 39
2 40
10
41
X
5
42
8
5 6
X H
7
9
1
43
71169
Page 6A-30 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Single Helm
1 - 14‑pin data harness (to starboard engine) 24 - Start/stop connectors with weather caps
2 - 14‑pin data harness (to starboard inner engine) 25 - Port inner lever 1 connector ‑ attach resistor pack #94
3 - 14‑pin data harness (to port inner engine) for configuration
4 - 14‑pin data harness (to port engine) 26 - Starboard inner lever 1 connector ‑ attach resistor pack
5 - CAN X terminators #93 for configuration
6 - CAN H terminator 27 - Zero Effort ERC
7 - Gauge power relay 28 - Port and starboard lever 1 connectors
8 - Quad‑engine, single‑helm harness 29 - Port and starboard lever 2 connectors
9 - Accessory power 30 - Port inner and starboard inner lever 2 connectors with
10 - Junction box weather caps
11 - Ignition key switches 31 - 8‑pin to 3‑pin trim adapter harness
12 - Lanyard stop switch 32 - Trim pad
13 - Lanyard switch diode pack 33 - Trim connector
14 - Black ERC connector (port inner) 34 - Quad‑engine legacy control module (LCM) harness
15 - Gray ERC connector (starboard inner) 35 - Port LCM
16 - Brown ERC connector (port) 36 - Port inner LCM
17 - Green ERC connector (starboard) 37 - Starboard inner LCM
18 - Blue ERC connector (CAN P) 38 - Starboard LCM
19 - Warning horn 39 - GPS/IMU assembly
20 - CAN H adapter (orange) 40 - Diagnostic port
21 - Joystick 41 - VesselView Link
22 - Electric steering helm 42 - VesselView (or equivalent MFD)
23 - CAN P adapter (blue) 43 - NMEA® 2000 network
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6A-31
Helm Architecture Diagrams: Single Helm
Notes:
Page 6A-32 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Dual Helm
System Architecture Diagrams
Section 6B - Helm Architecture Diagrams: Dual Helm
Table of Contents
SEDH DTS ‑ Single Console ERC.....................................6B-4 TEDH DTS ‑ Dual Console ERC........................................6B-8
SEDH ESH ‑ Single Console ERC.....................................6B-5 TEDH Joystick/ESH ‑ Dual Console ERC..........................6B-9
DEDH DTS ‑ Dual Console ERC....................................... 6B-6 QEDH DTS ‑ Dual Console ERC..................................... 6B-10
DEDH Joystick/ESH ‑ Dual Console ERC......................... 6B-7 QEDH Joystick/ESH ‑ Dual Console ERC....................... 6B-11
6
B
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6B-1
Helm Architecture Diagrams: Dual Helm
Notes:
Page 6B-2 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Helm Architecture Diagrams: Dual Helm
Notes:
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6B-3
Helm Architecture Diagrams: Dual Helm
SEDH DTS - Single Console ERC
1 - 14‑pin data harness (to engine)
2 - Gauge power relay
3 - Global wake link harness
4 - Multiple helm link harness (outer)
5 - Multiple helm gauge power link harness
6 - Single‑engine, lower‑helm harness
7 - Accessory power
8 - Junction box
9 - Ignition key switch
10 - Lanyard stop switch
11 - Green ERC connector (starboard)
12 - Blue ERC connector (CAN P)
13 - Warning horn
14 - Single‑engine ERC (single console)
15 - Diagnostic port
16 - CAN X terminator
17 - CAN P terminator
18 - CAN H terminator
19 - Single‑engine, upper‑helm harness
Page 6B-4 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Single-Engine, Dual-Helm (SEDH) DTS - Single Console ERC
Helm Architecture
14 14
13 13
12 12
11 11
10 10
16 17 18
X P H
2
1 9
19
6
2
5
4
3
15
8 8
7
Page 6B-4.1
90-8M0161677 71177
Single-Engine, Dual-Helm (SEDH) DTS - Single Console ERC
Helm Architecture
14 14
13 13
12 12
11 11
10 10
16 17 18
X P H
2
1 9
19
6
2
5
4
3
15
8 8
7
Page 6B-4.1
90-8M0161677 71177
Single-Engine, Dual-Helm (SEDH) with Electric Steering (ESH) - Single Console ERC
Helm Architecture
16 16
15 15
18 18
14 17 14 17
13 13
12 12
11 11
10 10
23 24 25
2 X P H
1 9
26
6
2
5
4
3
27
19
8
8
7
20
21 21
Page 6B-5.1 22
90-8M0161677 71176
Single-Engine, Dual-Helm (SEDH) with Electric Steering (ESH) - Single Console ERC
Helm Architecture
16 16
15 15
18 18
14 17 14 17
13 13
12 12
11 11
10 10
23 24 25
2 X P H
1 9
26
6
2
5
4
3
27
19
8
8
7
20
21 21
Page 6B-5.1 22
90-8M0161677 71176
Helm Architecture Diagrams: Dual Helm
SEDH ESH - Single Console ERC
1 - 14‑pin data harness (to engine) 15 - Weather cap (connector not used)
2 - Gauge power relay 16 - Electric steering helm
3 - Global wake link harness 17 - CAN P adapter (blue)
4 - Multiple helm link harness (outer) 18 - Single‑engine ERC (single console)
5 - Multiple helm gauge power link harness 19 - Diagnostic port
6 - Single‑engine, lower‑helm harness 20 - VesselView link
7 - Accessory power 21 - Multifunction display
8 - Junction box 22 - NMEA® 2000 network
9 - Ignition key switch 23 - CAN X terminator
10 - Lanyard stop switch 24 - CAN P terminator
11 - Green ERC connector (starboard) 25 - CAN H terminator
12 - Blue ERC connector (CAN P) 26 - Single‑engine, upper‑helm harness
13 - Warning horn 27 - GPS/IMU assembly
14 - CAN H adapter (orange)
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6B-5
Helm Architecture Diagrams: Dual Helm
DEDH DTS - Dual Console ERC
1 - 14‑pin data harness (to starboard engine)
2 - 14‑pin data harness (to port engine)
3 - Multiple helm link harness (outer)
4 - Gauge power relay
5 - Multiple helm gauge power link harness
6 - Dual‑engine, lower‑helm harness
7 - Accessory power
8 - Junction box
9 - Ignition key switches
10 - Lanyard stop switch
11 - Lanyard diode pack
12 - Brown ERC connector (port)
13 - Green ERC connector (starboard)
14 - Blue ERC connector (CAN P)
15 - Warning horn
16 - Dual‑engine ERC (dual console)
17 - Diagnostic port
18 - CAN X terminator
19 - CAN H terminator
20 - Dual‑engine, upper‑helm harness
Page 6B-6 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Dual-Engine, Dual-Helm (DEDH) - Dual Console ERC
Helm Architecture
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17 X H 8
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Dual-Engine, Dual-Helm (DEDH) - Dual Console ERC
Helm Architecture
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5 18 11 10
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Dual-Engine, Dual-Helm (DEDH) Joystick Piloting (JP)
Helm Architecture
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16 19 20
15
16 19 20
14 15
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4 4 14
12
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22
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Dual-Engine, Dual-Helm (DEDH) Joystick Piloting (JP)
Helm Architecture
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18
17
17
16 19 20
15
16 19 20
14 15
13
4 4 14
12
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27
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22
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Helm Architecture Diagrams: Dual Helm
DEDH Joystick/ESH - Dual Console ERC
1 - 14‑pin data harness (to starboard engine)
2 - 14‑pin data harness (to port engine)
3 - Multiple helm link harness (outer)
4 - Gauge power relay
5 - Multiple helm gauge power link harness
6 - Dual‑engine, lower‑helm harness
7 - Accessory power
8 - Junction box
9 - Ignition key switches
10 - Lanyard stop switch
11 - Lanyard diode pack
12 - Brown ERC connector (port)
13 - Green ERC connector (starboard)
14 - Blue ERC connector (CAN P)
15 - Warning horn
16 - CAN H adapter (orange)
17 - Joystick
18 - Electric steering helm
19 - CAN P adapter (blue)
20 - Dual‑engine ERC (dual console)
21 - Diagnostic port
22 - VesselView link
23 - Multifunction display
24 - NMEA® 2000 network
25 - CAN X terminator
26 - CAN H terminator
27 - Dual‑engine, upper‑helm harness
28 - GPS/IMU assembly
90-8M0161677 eng MARCH 2021 © 2021 Mercury Marine Page 6B-7
Helm Architecture Diagrams: Dual Helm
TEDH DTS - Dual Console ERC
1 - 14‑pin data harness (to starboard engine)
2 - 14‑pin data harness (to center engine)
3 - 14‑pin data harness (to port engine)
4 - Gauge power relay
5 - Multiple helm link harness (outer)
6 - Multiple helm gauge power link harness
7 - Multiple helm link harness (inner)
8 - Triple‑engine, lower‑helm harness
9 - Accessory power
10 - Junction box
11 - Ignition key switches
12 - Lanyard stop switch
13 - Lanyard diode pack
14 - Gray ERC connector (center)
15 - Brown ERC connector (port)
16 - Green ERC connector (starboard)
17 - Blue ERC connector (CAN P)
18 - Warning horn
19 - Triple‑engine ERC (dual console)
20 - Diagnostic port
21 - CAN X terminator
22 - CAN H terminator
23 - Triple‑engine, upper‑helm harness
Page 6B-8 © 2021 Mercury Marine 90-8M0161677 eng MARCH 2021
Triple-Engine, Dual-Helm (TEDH) DTS
Helm Architecture
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4 4
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16 16
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Triple-Engine, Dual-Helm (TEDH) DTS
Helm Architecture
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13 13
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