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
DB25 connector
| Pin | |
| 1,2,14 | Spark output A
|
| 5,6,18 | Spark output B
|
| 9,10,22 | Spark output C
|
12,13,25
| Spark output D
|
| 11 | Switch Map [JS7]
|
| 15 | Knock Sensor F out |
| 16 | Knock Sensor R out |
17
| Knock Controller Input
|
19
| O2 Input (optional)
|
3/4
| DME Out
|
| 7/8 |
|
| 23/24 | Boost Output
|
20/21
|
|
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