I wonder why (aircraft:-)) landing lights are so short lived? The ones in my car seem to go on forever and they're used in all weathers, on rough bumpy roads as well as being flashed (if you'll excuse the expression). I've heard about people adding resistors in parallel to reduce the initial power surge - so is there a mod we can do to increase their life? It's not necessarily the cost but the inconvenience of having to replace them.