cant be positive but my aftermarket stereo (not the shaker) did that once and it was because the lead phone mute wire on the back was crossed to a power source, not to sure how that stuff works but i took it to a stereo shop near my house and they fixed it.......
__________________ 2006 4.0l White
18" Motegi MR7's 245/45's
Triple Gauge Pod, Magna Flow Dual Exhaust,
Black out panel, Clear bumper and turn signal lenses,
Billit Upper/Lower grill, Chrome Mirrors/Tint, DVD,GPS,
C&L CAI with X-calibrator 3 Tuner |