** DRAFT Aug 8th, 2015**
*** Project: Arduino & BMW K/I-Bus Interface ***
** Intro located here ***
There are several locations in a BMW E46 to tap into the K-Bus wiring. The three I will write about are:
• CD Changer connector – in Trunk
• Radio K-Bus wiring
• K-Bus terminal/junction block, above fuse box
CD Changer connector:
This is a great place for the Arduino interface as the connector provides a +12V wire, ground, and the K-Bus line.
The CD Changer is an optional unit on most cars, but the wiring is typically there even if you do no have the actual CD Changer.
The wiring is located in the trunk – drivers’ side, behind the trim.
The connector we’re interested in is designated as X18180 in the BMW Wiring Diagram System (WDS).
Remember: The K-Bus line is always White & Red with Yellow dots.
Photos below:
Radio K-Bus wiring:
DIY coming soon.
K-Bus terminal block:
My personal favorite location to tap into the K-Bus. I plan to do a clean tap, using an OEM socket/contact and wire.
DIY coming soon.
Arduino Interface Integration:
Coming Soon.
Reslers’ Interface Integration:
Coming Soon.
Project Continued:
• Intro
• Technical Details
• Schematic Description
• Resources & Downloads
• Programming
• Integration
• Messages