So on way home today my front speakers all shut off. Tried adjusting sound to front an nothing. To the rear works no problem. This hasn't ever happened before so not sure if maybe wiring could just wiggle loose from rear of radio or if there's a fuse or something? All stock system, blinker sound works and when car is off and open door can hear some light static in door speaker? Fuse,amp, radio? What you all think??