To add to my recent aviation purchases, I got a Garmin GPS 496 today. Damn, that's one complex piece of gear.
Among the many accessories that came with it is a combination cigarette lighter adapter and external speaker (for the voice prompts and XM radio). The one I got wouldn't plug into the unit, no matter how hard I pushed or which way I turned it. I finally called Garmin customer service, and they're sending me a new one, no questions asked.