Thread: combox retrofit
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      03-23-2023, 11:30 PM   #5
zam900
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Drives: 2007 E91 335i
Join Date: Jan 2023
Location: United Kingdom

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Quote:
Originally Posted by TSilver335i View Post
what about pin 18 from the TCU? Use that to power combox.

edit: From memory it may need to go into pin 2 on the combox connector

The pre wired plug only had these pins attached in image. I have managed to repin all but two of them. The blue/black (pin 12) and the white/black (pin 32). Repin Diagrams on this forum and others don’t show what these pins are used for so I have just left them out for now. I have only managed to use 5 wires ( power pin 17- pin 1, ground pin 36 - pin 14, thre wires for mic pos,neg and shield). From testing my issue with that power pin 17 is dead (has no power).

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