Ok I have a secondary radio, motorola Astro spectra, that I've installed in my trunk. The head is installed in the truck as well. I ran the speaker up front under my seat, but want to be able to turn it off when I don't wanna hear the traffic. I was thinking either having a way to shut the radio off itself somehow or the speaker. Is there a way I can do it with a button on the whelen hhs2200?