About five years ago, I bought the outboard GPS puck that Uniden sells such that I could utilize it with the Home Patrol 1 I had at the time. Well, today it bit the dust. The cigarette lighter adapter lights up when I plug it in, but the tiny red light on the unit itself is dark, and the 536HP shows no indication of a GPS being plugged in. I guess that I would have expected it to survive longer than five years, since it is all a solid state piece. Oh well, I will buy another one, but I wonder if others have had a GPS puck that survived only five years or even less.