I have experienced a nightmare with my Garmin 395LM recently. I fitted a new mount for my motorbike where the lead from the power supply was too short; I extended the lead and although I have the correct power on the cradle the GPS would not fire up. It will start on its own battery and also if I attach by USB. My local shop confirmed that the correct power was available; I have heard that I may need a new lead; if that is so, does anybody know why, or have any idea what is going on please?