Hey guys, So my reverse sensing system is not working in my truck.. The button that turns the system on or off the is always illuminated showing it is turned off even when the truck is not in reverse. I read online someone saying that if the off button is always illuminated that its most likely the speaker in the cab that needs replacing, and if the button only illuminates once the truck is put into reverse that its most likely a bad sensor. Since mine is always on im assuming its my speaker and Id like to see if I can take a look at it before i go ahead and replace it.. Does anyone know where the speaker is located?