I recently got in on the good deal for the Garmin 396 LMT-S. I installed it today by attaching it to the unused auxiliary plug behind the radiator. Everything works great with one exception. It randomly powers off. I don't suspect my wiring of the device as it is/was completely charged even before mounting. I have sent an e-mail to Garmin and will try to call them on Monday. Has anybody else had a similar problem? Any troubleshooting thoughts? I've been using handheld Garmins for hiking and hunting for two decades and have been using Garmin automobile GPS devices for the same amount of time and have never had one do this.