Indeed Alejandro, the wingflex will prevent you from adding those "wing lights"... Anyways, I'm not even sure what those "wing lights" are.... I noticed that the "navigation lights" will trigger both the gree+green lights, and some white lights on the back of the wingtip... perhaps those are the wing lights, and by mistake they react to the navigation lights button ? Ah well, it's fine as it is.
I could make my tests this morning.
Here are the conclusions:
1- The slats panelIt works now, but there are still some mistakes. The test button for example, doesn't work at all anymore. Also, the central yellow lights are ON when you are on the second crank of flaps, but they switch OFF when you deploy the flaps more. This should be the contrary, they should be OFF when the flaps are only 5 to 15 degrees, and they should turn ON when the flaps are more than 20 degrees.
2- The GPSWIt works very well, but as you said the default FSX GPSW must be turned OFF first, because you can hear both of them when you are flying. The default GPWS can be turned OFF from the aircraft.cfg, there's a line for this if I remember correctly. Also, I confirm that my sim crashes as soon as I try to reload the aircraft, just like you said.
3- The electric systemIn my default flight, the avionics are switched OFF. As a consequence, if I start your 737 manually, even after swithing ON everything, I still have no radios at all. I am forced to press CTRL+E to get my avionics. I believe the 737 in real life has no avionics switch, so I'll have to make a new default flight, but perhaps you'll have to write a short warning about this in your readme file that you will include in the package.
Also, what does the "panel switch" do ? The swith between the "Engine HYD" switches ? :-?
4- The lightsThere is, on the top panel, the "runway turnoff" swithes. I am not sure about what they are supposed to do, and I wonder if they could be reduntant or in conflict with your cabin and instruments lights switches. This should be clarified if possible.
Some screenshots of the test flight around Bowerman. 30% fuel, no passenger, no lugage. 8-)
Cheers,
Stephane.