I've been looking into this for sometime now..and will be doing this over the winter.
Here is all the info I have gathered so far from many different areas/forums/manuals!
BMW Parts needed:
ROCKER-TYPE SHIFT LEVER, LEFT Part#: 61316913803
ROCKER-TYPE SHIFT LEVER, RIGHT Part#: 61316913804
They look like this when installed:
These will both be able to upshift or downshift vs the SMG paddles where one is up the other is down!
Here is the wiring diagram of our clockspring and steering control module:
As you can see 1 and 4 are open (we can use these for our paddle shifters signal up/signal down) and 5 is the ground that will be used!
There is a ton of info here on this mod for the LX's. There is no difference in the steps that need to be taken...just the parts look different is all!
More info here on the Red Site:
I hope no one minds me linking to other sites as the amount of info needed to do this mod is huge...plus if you mess it up it's 4 grand in parts to make it right again.
Please read carefully as there are many warnings and safety concerns!
I will do a full writeup specific to the WK once I get into it!