it's actually an E64 but they are virtualy the same as the E60. E9x should be the same concept since the wiring isn't much different
First pic is a quick diagram. (I believe the E9x AE already come on when unlocking the car right? then you would just leave out the part with the footwell and go straight from the cig lighter socket to the AE's
Second pic is the 12V outlet for the passenger side cig lighter socket. Tap into the green and black (12V) then bring it across to the drivers side and tap into the already existing wire that runs to the AE's.
Checked everything and it works great. unlock turns on AE's. Turn ignition and AE's become DRLs. You have to make sure to follow the connecting points as i pointed out in my diagram including the diodes.
passenger side cig lighter socket tap needs a diode that has to go after the diode from the footwell light.
if you want tail lights etc. then you need to tap before the diode from the footwell light.