# Notes on fully custom M111 Engine Harness

See also [HOWTO-M111-on-microRusEFI](HOWTO-M111-on-microRusEFI)

## Reference point

While harness design is work in progress we use reference point R. R is currently 100cm from ECU.

R+5 would mean "5cm further away from ECU from point R", "R-5" would mean "5cm closer to ECU"

## Sensors subassembly

x4 sensor gnd crimp, R+40cm
x3 sensor +5v crimp, R+40cm

![x](Images/harness-connectors/mercedes/sensors-assembly-fuel-pressure.png)

![x](Images/harness-connectors/mercedes/sensors-assembly-tmap.png)

![x](Images/harness-connectors/mercedes/sensors-assembly-clt.png)

![x](Images/harness-connectors/mercedes/sensors-assembly-cam.png)

## Actuators subassembly

x4 power gnd crimp, R+45cm

x4 power from main relay +12v crimp, R+45cm

![x](Images/harness-connectors/mercedes/secondary-flap.png)

![x](Images/harness-connectors/mercedes/secondary-boost-control.png)

TODO supercharger clutch 200cm green 55cm red

![x](Images/harness-connectors/mercedes/secondary-vvt.png)