I'm building my route that uses the AWS system with the colour aspect signals. I'm placing the AWS ramp before the signal so if the signal is set at green, the AWS bell will sound, but if the signal is at danger or at red the loco automatically stops. But when the AWS bell sounds on a green signal, the AWS sunflower goes black and I can't get it to reset back to the AWS 'on' (sunflower displaying) again. which keyboard button do i press, or how do i set up the AWS ramps with the signals so as to prevent the sunflower going black after passing a green signal?