Boardmonitor pinouts to BM54 Radio Module

[we350z]

I have a 2000 BMW X5 4.4i w/factory MKIV DVD Navigation + 16:9 Boardmonitor.

Behind the dash is the X18801 (12 pin blue) connector:



Here are the pinouts:




Wondering how they terminate to the newer generation 40-pin connector on the BM54 radio tuner module under the spare tire in the trunk. The plug looks like this:



Here is the pinout diagram:



Is this mapping correct?

X18801 Pin 01 -> X18126 / X13646 Pin 14
X18801 Pin 03 -> X13469 Pin 01
X18801 Pin 04 -> X13469 Pin 02
X18801 Pin 06 -> X18126 / X13646 Pin 09
X18801 Pin 09 -> X13469 Pin 07
X18801 Pin 10 -> X13469 Pin 08
X18801 Pin 11 -> X13469 Pin 16

I know 12V Direct and GND are available at many points throughout the vehicle.

[we350z]

So turns out I actually have the old style round pin 17-pin connector since my build date is prior to 10/2001: