What coils to use?

Any Bremi style ignition coil from a 2.8L M52B28 BMW [12131748018] or updated [12137599219]
  • 1995-2000 E36 328i
  • 1995-1999 E39 528i
  • 1995-1999 E38 728i/728iL
  • 1997-1999 E36/7 Z3 2.8
    Note: Coil 1 Must be ground down to fit, like this example Here.


What Harness to use?

Any cable harness off of an M52 [12511744589]:
  • 1995-2000 E36
  • 1995-1999 E39
  • 1995-1999 E38
  • 1997-1999 E36/7 Z3 2.5/2.8/3.0/ 3.2
This is needed for the 6 connectors that attach to the coils. 4 are needed.

How to connect the harness?

These are the part numbers for the connector and pins that connect into the factory coil pack harness.

​The full Harness can be found on an 87-90 BMW E30, E34.
Known as the Plug-board injection valve. [12511719606]

​Only the connector with the 6 pins is needed from the injector valve, or you can order the connector and build it yourself.
Connector [12521718125]
Pins [x6] [61131376191]

Where to get a mounting plate?

You can order an already made Mounting Plate here.
or
You can make your own using flat bar aluminum from here. [2.5" x 3/16" x 24"]

Wiring Diagrams and Extras

Wiring Diagram for Harness
Pin:   Location:                                         Color:
3       4a: Joint ground of secondary coils    Brown
2       15: Joint 12v                                    Green
5       Ignition coil 4                                   Blue
7       Ignition coil 3                                   Yellow
6       Ignition coil 2                                   Red
1       Ignition coil 1                                   White
4       Not Used                                          N/A
Pin assignment, primary connection:
- Pin 1 = terminal 1 of ignition coil 1
- Pin 2 = terminal 15, 12v
- Pin 3 = terminal 4a
- Pin 4 = not allocated
- Pin 5 = terminal 1 of ignition coil 4
- Pin 6 = terminal 1 of ignition coil 2
- Pin 7 = terminal 1 of ignition coil 3