I see why we are having difficulty comparing our setup. My module is exactly the opposite of yours, given the same orientation (see picture below). Also, I have been referring to SimVim index numbers, where as you have been referring to locations on the LED matrix. In the image below, the blue numbers represent SimVim index numbers.
The yellow index 41 is the LED that lights up when I configure SimVim like this and press the MKR button in XPlane:
[Output] L30.41 Audio_MKR_On
Below is the result when I hook up the matrix and 7-segment to SimVim and press the MKR button. SimVim index 41 lights on the matrix, and D2, SEGB lights on the 7-segment display. At least for my purposes, I'm trying to figure out why the indexes for segment DP are out of order. If I wire my project with the way SimVim maps this today, I'm afraid it might change in the future.