Let's face it and look at a basic fact. There has not been a mechanical flasher in a Range Rover since Classics ended in 1995. There is nothing clicking under the dash or in any fuse box. It is a computer generated signal through a speaker to remind you that a blinker is on. You either find the location of the signal speaker that clicks for the flashers, beeps when you leave your key in the ignition, when a door is ajar, hatch is open etc.... and disconnect it or stick some foam padding over it if it is really that annoying. It would be much more safe to mufflle it's dramatic horror movie screams with a pillow than to miss out on important beeps warning you of overheat, low fuel or no oil pressure... etc.
