Ok, it's going to take a bit longer than I expected.
Gave up on getting that alternate flaps to work normally. I just pointed it the wrong way and now it works, it shouldn't but it does.
Brake pressure works fine.
The flap and gear annunciators work fine. Too bad the Tail Skid annunciator isn't mapped in the Level-D SDK. I just turned on the top 3 annunciators to test.
Finally got the compass to work. Turns out you need 24bit BMPs. The colour on the window mask has to be 1,1,1 and you can't get that in 256 colour BMP.
The 3 other gauges on the right were just pasted in for testing.