Hello, I have a Federal Signal Touchmaster TM4 and I am having an issue with the lights on it. For some reason the "Siren" light is constantly blinking with no click sound and no switches activated. And all four lights oddly flicker when any of the sounds on the system are activated. This system is in great condition and everything worked on it when I first got it about a year ago. Also when aux is activated the ACC light comes on but there's no clicking sound. Any info on the issue is much appreciated
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