1.8 MS Motronic Kit Wiring guide

Motronic Connector

Connect Pin 6 to Tach Ouput on Multi-Output board PCB.
Connect Pin 22 to ICV#1 on Multi-Output board PCB.
Connect Pin 4 to ICV#2 on Multi-Output board PCB.
Connect Pin 37 (DME) to +12v on  Multi-Output board PCB, AND pin "3/4" on Spark Driver board.
Connect Pin 11 to DB25 Pin 15 (Knock F)
Connect Pin 29 to DB25 Pin 16 (Knock R)
Connect Pin 14 to Multi-IO AUX 1 out (fan low)
Connect Pin 34 to Multi-IO AUX 2 out (fan high)

MS DB37 socket

Connect to Motronic connector as per template.
Connect "FIdle" (green wire that goes  to pin 30) to "FIdle in" on the Multi-Output board PCB.

MS DB15 socketBMW_E30_Megasquirt_&_Wasted_Spark_Conversion/Part_2_-_Building_the_MS_Motronic_Boxc_Kit_Wiring_guide#

Pin M	Pin F	PCB Pad	MS Connection [MS2]	Connect to Multi-IO PCB	Spark/DB25 board	55-Pin Motronic connetor
1	8		Ground
2	7		Ground
3	6	15	JS7 ([JS0]	Aux 1 In (Fan Slow)
4	5	13	JS8 [JS2]	Aux 2 In (Fan Fast)
5	4	11	[JS11]	Boost In
6	3	9	[JS7]		Switch Maps
7	2	7	+5V
8	1		+12v
9	15	17	JS0 [JS10]	Tachometer IN
10	14	16	[JS4]		Knock Input
11	13	14	JS5
12	12	12
13	11	10	R27			2 & 31 (Spark C)
14	10	8	R29			13 & 20 (Spark B)
15	9	6	R26			1 & 21 (Spark A)

 

 

 

 

 

 

 

 

 

 

 

Spark Driver board