Thank you JL for the latest updates which I just installed in the Sim.I have not changed P3D to v. 5 at this stage, as I will probably wait until later in the year. I also have no FDS Overhead switches working at this stage, so it appears to be something with the FDS switches and leds.I guess it will give you a lot more work for you on the updates if I keep to P3D version 4.5 , so please let me know and I can change over to V5 Thanks..................Brian W.