Spent quite a bit of time researching the wiring for the AHM and discovered that in essence there are two main variants; the AHM3+ and the AHM4R. (There are earlier versions but they don't seem to play a role for newer cars.) The 3+ seems to have been phased out late 2007 which makes me wonder if that was a model intended only for the e53?

Between the 3+ and the 4R unfortunately the plug on the harness changed from 16 to 20 pins. Pin and wire sizes were changed as well. There is an instruction bulletin from BMW how to change the pin assignments when changing from the 3+ to the 4R. I deduced what the pinouts are for both but unsure where to go from here. I am now faced with having a 3+ module and a 4R plug. I can work around that but wondering if the 3+ even works in the E70. Anyone on here know which module they are running?

__________________
2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.