rusefi_documentation/HOWTO-custom-harness-lazyharnezz-M73.md

# BMW M73 full PnP harness

See also [rusEFI-Quick-Start-PDF](rusEFI-Quick-Start-PDF)

Expected VR shape see [Trigger-Configuration-Guide](Trigger-Configuration-Guide#determine-correct-polarity)

![image](https://github.com/rusefi/rusefi/assets/48498823/fcecf4e4-6657-436b-a4f3-3af9ee59a375)

[Reference cranking trigger decoding log](https://github.com/rusefi/rusefi/files/15050786/M73-lazyharness.zip)

![image](https://github.com/rusefi/rusefi/assets/48498823/7f430111-e7c0-4411-b955-136113df577d)

https://youtube.com/shorts/lppFagGm2OU

## Main Relay

https://rusefi.com/docs/pinouts/proteus/?connector=black35&pin=10

![WhatsApp Image 2024-04-09 at 19 47 18_14002bc2](https://github.com/rusefi/rusefi/assets/48498823/732468f4-1b9f-45e7-8a4c-b3aebe70cbc3)

## Fuel Pump Relay

https://rusefi.com/docs/pinouts/proteus/?connector=black35&pin=23

![WhatsApp Image 2024-04-09 at 19 46 48_9fef66cd](https://github.com/rusefi/rusefi/assets/48498823/7c1f62cc-6580-4d1d-9eb7-d86d3b655785)

## Nissan ETBs

Hitachi SERA576-01 60mm diameter for instance 2003 infinity g35

https://rusefi.com/docs/pinouts/proteus/?connector=black23&pin=6

First ETB cable has orange mark.

green https://rusefi.com/docs/pinouts/proteus/?connector=white35&pin=24

yellow https://rusefi.com/docs/pinouts/proteus/?connector=white35&pin=14

TPS #2

green https://rusefi.com/docs/pinouts/proteus/?connector=white35&pin=25

yellow https://rusefi.com/docs/pinouts/proteus/?connector=white35&pin=15

## Cam

Uses +12v power

## TMAP

BOSCH 0261230217

![image](https://github.com/rusefi/rusefi/assets/48498823/71d91df0-37b4-49f7-b585-eced9c356b1e)

IAT white, MAP blue

## Crank

M70 style three pin

![WhatsApp Image 2024-05-03 at 11 17 05_9c9418e3](https://github.com/rusefi/rusefi/assets/48498823/551a22bd-90e0-481d-a151-d2c820c2b48d)

## CLT

![WhatsApp Image 2024-05-03 at 11 14 42_78abb761](https://github.com/rusefi/rusefi/assets/48498823/f33314a0-8396-4a6a-b814-197cd0d9dc1b)

## Fuel Pressure Sensor

100 psi https://www.amazon.com/gp/product/B09FXDNHPG/

## WBO

https://github.com/rusefi/rusefi/wiki/WBO#sensor-part-numbers

## 8 pin plug

Yellow Tachometer Output HS2

White Aux Low Side LS14

Green Fan LS15

## Pedal

Many pedals would work if you wire, one popular sensor mounted on many different Toyota and Nissan vehicles see https://github.com/rusefi/rusefi/wiki/Vault-Of-Electronic-Throttle-Bodies-ETB#nissan-pedal

## Integration

Green: Fan Relay

White: auxiliary low side

Yellow: tachometer

![image](https://github.com/rusefi/rusefi/assets/48498823/dde303e9-737d-4b4c-ba3d-a346ec9146fd)