Hardware:OEM 121 pin connectors

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Disclaimer: the following observations could be really wrong, please let me know if you have better information.

See also https://rusefi.com/wiki/index.php?title=Hardware:OEM_connectors#121_pin


There are two kinds of 121 connectors which look pretty much the same but do not mate together unless you use a grinder to massage them a bit.


368255/Asian

http://www.te.com/catalog/pn/en/368255-2

This one is used on Asian vehicles - Kia Hyundai etc.

See also http://rusefi.com/wiki/index.php?title=Vehicle:Kia_Spectra_2005

Od85yJ1.png

Note the horizontal line and the lack of double-lines

368255_top.jpg

1241434/German

http://www.te.com/catalog/pn/en/1241434-1

This one is used on Audi, VW, Mini Cooper.

4j0xfxB.png

Note the double-lines:

Ott0USe.png

1241434_top.jpg

How to make a German plug work with an Asian header

Use a grinder on the plug. This would probably void your warranty.

Before grinding:

before_shaving.jpg

Take the orange rubber piece away while grinding. Grind a bit on the inside.

after_shaving.jpg

Re-install the rubber ring.

after_shaving_2.jpg

This way you should be able to use a "German" style plug on a "Asian" style connector.

final_result.jpg

See also http://rusefi.com/wiki/index.php?title=Hardware:OEM_connectors#121_pin


There is also a 115 pin version - 6 pins are left out (14, 15, 16, 33, 34, 35)

pinouts

https://rusefi.com/wiki/index.php?title=Vehicle:Kia_Spectra_2005

https://rusefi.com/wiki/index.php?title=Vehicle:Mini_Cooper_2003

https://rusefi.com/wiki/index.php?title=Vehicle:Nissan_Xterra_2011