Ignition Wiring - Revision history

Thomas Peterson: Thomas Peterson moved page Ignition Wiring Diagram to Ignition Wiring

2026-11-03T17:58:16Z

Thomas Peterson moved page Ignition Wiring Diagram to Ignition Wiring

← Older revision	Revision as of 17:58, 3 November 2026
(No difference)

Thomas Peterson: /* Power / Comm (Panel) Wiring */

2026-11-03T17:56:46Z

Power / Comm (Panel) Wiring

← Older revision		Revision as of 17:56, 3 November 2026
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	The ignition box has a 8-pin circular connector that runs back to the panel. The connection table is shown below.		The ignition box has a 8-pin circular connector that runs back to the panel. The connection table is shown below.

			[[File:9-MIL.png]]

	{\| class="wikitable" style="margin-left: 0px; margin-right: auto;"		{\| class="wikitable" style="margin-left: 0px; margin-right: auto;"
	\|+		\|+
	\|-		\|-
	! Circular Pin !! Cable color !! Wire color !! ~~Destination~~		! Circular Pin !! Cable color !! Wire color !! PCB Pin !! Description
	\|-		\|-
	\| A \|\| x \|\| x \|\| x		\| A \|\| Gray \|\| Green \|\| 28 \|\| CAN Cmn
	\|-		\|-
	\| B \|\| x \|\| x \|\| x		\| B \|\| Gray \|\| Yellow \|\| 30 \|\| CAN H
	\|-		\|-
	\| C \|\| x \|\| x \|\| x		\| C \|\| Gray \|\| Blue \|\| 29 \|\| CAN L
	\|-		\|-
	\| D \|\| x \|\| x \|\| x		\| D \|\| Orange \|\| Red \|\| 37 \|\| BATT +
			\|-
			\| E \|\| Gray \|\| Black \|\| 32 \|\| Tach signal
			\|-
			\| F \|\| Gray \|\| White \|\| 4 \|\| Alarm output (closes to ground on ICM alarm)
			\|-
			\| G \|\| Gray \|\| Red \|\| 17 \|\| Shutdown input (panel closes to ground to kill ICM)
			\|-
			\| H \|\| Orange \|\| Black \|\| 36 \|\| BATT -
	\|}		\|}

			'''Important Note''': The power/comm harness has two sections as shown above, so there are two red wires and two black wires. Be careful to find the red/black wire that come from their own cable -- this is the power input. The other black/red wires are for shutdown and tachometer.

			The wires from the power/comm harness will land at panel terminal blocks and route to the appropriate location. See the [[Ignition Installation Guide]] for more information. Note that on EMIT panels the alarm output is not used since the alarm info is shared via CAN. The unused wire should be landed or taped off so it doesn't short anything.

	== Wiring Overview ==		== Wiring Overview ==

Thomas Peterson at 17:49, 3 November 2026

2026-11-03T17:49:54Z

← Older revision		Revision as of 17:49, 3 November 2026
Line 196:		Line 196:

	[[File:Icm hall threaded.png\|600px]]		[[File:Icm hall threaded.png\|600px]]

			== Power / Comm (Panel) Wiring ==

			The ignition box has a 8-pin circular connector that runs back to the panel. The connection table is shown below.

			{\| class="wikitable" style="margin-left: 0px; margin-right: auto;"
			\|+
			\|-
			! Circular Pin !! Cable color !! Wire color !! Destination
			\|-
			\| A \|\| x \|\| x \|\| x
			\|-
			\| B \|\| x \|\| x \|\| x
			\|-
			\| C \|\| x \|\| x \|\| x
			\|-
			\| D \|\| x \|\| x \|\| x
			\|}

	== Wiring Overview ==		== Wiring Overview ==

Thomas Peterson: /* Speed / Timing Input Wiring */

2026-11-03T17:47:40Z

Speed / Timing Input Wiring

@@ Line 141: / Line 141: @@
 == Speed / Timing Input Wiring ==
+There are three speed/timing inputs on the box: Flywheel MPU, index MPU, and index hall sensor. Only one of the two index inputs will be used, so there should always be exactly two of these three in use. The image below shows the plug locations.
 == Wiring Overview ==

Thomas Peterson at 17:36, 3 November 2026

2026-11-03T17:36:14Z

← Older revision		Revision as of 17:36, 3 November 2026
Line 138:		Line 138:

	The harness and firing order setup can be tested at [[Ignition_Testing_Tools#Engine_off_testing]]. This can be used to make sure everything is correct.		The harness and firing order setup can be tested at [[Ignition_Testing_Tools#Engine_off_testing]]. This can be used to make sure everything is correct.

			== Speed / Timing Input Wiring ==

			x

	== Wiring Overview ==		== Wiring Overview ==

Thomas Peterson: /* Wiring Overview */

2026-11-03T17:35:03Z

Wiring Overview

← Older revision		Revision as of 17:35, 3 November 2026
Line 140:		Line 140:

	== Wiring Overview ==		== Wiring Overview ==

			This diagram does not show the box connector pinout, but shows an overview of where devices end up landing on the board.

	[[File:ICM1 wiring diagramb.png]]		[[File:ICM1 wiring diagramb.png]]

Thomas Peterson: /* Coil Wiring */

2026-11-03T17:34:30Z

Coil Wiring

@@ Line 116: / Line 116: @@
 *Wire will daisy-chain to all coil (+) terminals
 == Wiring Overview ==
 [[File:ICM1 wiring diagramb.png]]

Thomas Peterson: /* Coil Harness Wiring */

2026-11-03T17:25:48Z

Coil Harness Wiring

← Older revision		Revision as of 17:25, 3 November 2026
Line 67:		Line 67:
	===Coil Harness Wiring===		===Coil Harness Wiring===

	Note: for coil rail pinouts see [~~https://data.emittechnologies.com/wiki/index.php?title=~~Waukesha_VHP_Engine_Controls#Ignition_Coils]		Note: for coil rail pinouts see [[Waukesha_VHP_Engine_Controls#Ignition_Coils]]

	Typical coil harnesses are constructed using the table below. Note that the positive wires are "daisy-chained" between all coils "+" terminals, and the individual coil wires connect to coil "-" terminals.		Typical coil harnesses are constructed using the table below. Note that the positive wires are "daisy-chained" between all coils "+" terminals, and the individual coil wires connect to coil "-" terminals.
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	! Circular Pin !! Typ. Coil !! 4-cyl position !! 6-cyl position !! 8-cyl position !! 12-cyl position		! Circular Pin !! Typ. Coil !! 4-cyl position !! 6-cyl position !! 8-cyl position !! 12-cyl position
	\|-		\|-
	\| A \|\| Black 1 \|\| \|\| 6 \|\| 6 \|\|		\| A \|\| Black 1 \|\| \|\| 1 \|\| 2 \|\|
	\|-		\|-
	\| B \|\| White 1 \|\| 7 \|\| 7 \|\| 7 \|\| 3		\| B \|\| White 1 \|\| 1 \|\| 2 \|\| 3 \|\| 1
	\|-		\|-
	\| C \|\| Green 1 \|\| 8 \|\| 8 \|\| 8 \|\| 4		\| C \|\| Green 1 \|\| 2 \|\| 3 \|\| 4 \|\| 2
	\|-		\|-
	\| D \|\| Yellow 1 \|\| \|\| \|\| 5 \|\|		\| D \|\| Yellow 1 \|\| \|\| \|\| 1 \|\|
	\|-		\|-
	\| E \|\| Blue 1 \|\| 10 \|\| 10 \|\| 10 \|\| 6		\| E \|\| Blue 1 \|\| 4 \|\| 5 \|\| 6 \|\| 4
	\|-		\|-
	\| F \|\| Orange 1 \|\| 9 \|\| 9 \|\| 9 \|\| 5		\| F \|\| Orange 1 \|\| 3 \|\| 4 \|\| 5 \|\| 3
	\|-		\|-
	\| G \|\| Brown 1 \|\| \|\| 11 \|\| 11 \|\| 7		\| G \|\| Brown 1 \|\| \|\| 6 \|\| 7 \|\| 5
	\|-		\|-
	\| H \|\| Violet 1 \|\| \|\| \|\| 12 \|\| 8		\| H \|\| Violet 1 \|\| \|\| \|\| 8 \|\| 6
	\|-		\|-
	\| T \|\| Red 1 \|\| * \|\| * \|\| * \|\| *		\| T \|\| Red 1 \|\| * \|\| * \|\| * \|\| *
Line 98:		Line 98:
	\| U \|\| Drain \|\| \|\| \|\| \|\|		\| U \|\| Drain \|\| \|\| \|\| \|\|
	\|-		\|-
	\| J \|\| Black 2 \|\| \|\| \|\| \|\| 10		\| J \|\| Black 2 \|\| \|\| \|\| \|\| 8
	\|-		\|-
	\| K \|\| White 2 \|\| \|\| \|\| \|\| 11		\| K \|\| White 2 \|\| \|\| \|\| \|\| 9
	\|-		\|-
	\| L \|\| Green 2 \|\| \|\| \|\| \|\| 12		\| L \|\| Green 2 \|\| \|\| \|\| \|\| 10
	\|-		\|-
	\| M \|\| Yellow 2 \|\| \|\| \|\| \|\| 9		\| M \|\| Yellow 2 \|\| \|\| \|\| \|\| 7
	\|-		\|-
	\| N \|\| Blue 2 \|\| \|\| \|\| \|\| 14		\| N \|\| Blue 2 \|\| \|\| \|\| \|\| 12
	\|-		\|-
	\| P \|\| Orange 2 \|\| \|\| \|\| \|\| 13		\| P \|\| Orange 2 \|\| \|\| \|\| \|\| 11
	\|-		\|-
	\| R \|\| Brown 2 \|\| \|\| \|\| \|\|		\| R \|\| Brown 2 \|\| \|\| \|\| \|\|

Thomas Peterson at 17:23, 3 November 2026

2026-11-03T17:23:31Z

@@ Line 1: / Line 1: @@
 == Coil Wiring ==
@@ Line 67: / Line 64: @@
 | S || Plug 2, H
 |}

Thomas Peterson: /* Coil Wiring */

2026-11-03T17:10:17Z

Coil Wiring

← Older revision		Revision as of 17:10, 3 November 2026
Line 9:		Line 9:

	On the ignition circuit board there are one or two 9-pin coil connectors (depending on if the module supports 8 or 16 cylinders). In either case the outside box connector is a 19-pin MIL circular connector.		On the ignition circuit board there are one or two 9-pin coil connectors (depending on if the module supports 8 or 16 cylinders). In either case the outside box connector is a 19-pin MIL circular connector.

			'''PCB Connector'''

			[[File:ICM PCB Coil Conn.png]]

			The ICM has two of these PCB connectors on the board. If the module is for 8-cylinders or less than only one of the two is installed. The first connector (connector 1) is the one nearest the incoming power plug.

			'''Box Connector'''

			[[File:22-14-MIL.png]]

			The box connector is a 19-pin circular connector, MIL DTL-5015 type, shell size 22-14. The above diagram shows the arrangement of the pins from the back of the box connector or looking into the harness connector. If looking into the box connector the pins will be flipped (i.e. C would be on the left if the tab is up). When in doubt, the connector itself shows the pin letters next to the pin, though the text is small.

			'''PCB to Box table'''

			Note in the table below "Plug 1" is the 9 pin PCB plug nearest the power connection on the PCB, and "Plug 2" is the other plug.

			{\| class="wikitable" style="margin-left: 0px; margin-right: auto;"
			\|+
			\|-
			! Circular Pin !! Destination
			\|-
			\| A \|\| Plug 1, A
			\|-
			\| B \|\| Plug 1, B
			\|-
			\| C \|\| Plug 1, C
			\|-
			\| D \|\| Plug 1, D
			\|-
			\| E \|\| Plug 1, E
			\|-
			\| F \|\| Plug 1, F
			\|-
			\| G \|\| Plug 1, G
			\|-
			\| H \|\| Plug 1, H
			\|-
			\| T \|\| Plug 1, I
			\|-
			\| U \|\| Ring Terminal
			\|-
			\| J \|\| Plug 2, A
			\|-
			\| K \|\| Plug 2, B
			\|-
			\| L \|\| Plug 2, C
			\|-
			\| M \|\| Plug 2, D
			\|-
			\| N \|\| Plug 2, E
			\|-
			\| P \|\| Plug 2, F
			\|-
			\| R \|\| Plug 2, G
			\|-
			\| S \|\| Plug 2, H
			\|}