Saab Amp1 — Buy

Your radio screen might light up but produce no sound, and your turn signal indicators will be completely silent.

Look for a red blinking light at the fiber-optic connector when you wake the car up (e.g., by opening a door). If light reaches the amp but doesn't come out the other side, the internal circuit is fried. 2. Buying the Right Part

If you own a 2003–2006 Saab 9-3 , you’ve likely experienced the "silent treatment": no radio, no CD player, and—most annoyingly—the total loss of your turn signal "click" and warning chimes. This eerie silence almost always points to one culprit: a failed .