What Not to do with your h2o !
Here's a lesson learned the hard way by me and if I rat myself out it may save someone else the headache someday.
I have used my h2o gps for years with the rechargeable batteries and decided the other day to remount the gps to a new spot on the boat and use the 12v wire that came with the unit. I wanted to drill a small hole through the dash and shoot the wire through it and then just hard wire the 2 wires directly to 12v and a ground. Big mistake !! I fried my h20 as soon as I turned it on. That cigar plug that is on the end of the wire converts the voltage down to 3.??? volts. Of course I didn't realize this until it was too late. So now I get to send the unit back and for a mere 160 bucks get a new one without any of my 400 someodd waypoints on it. I suppose there are lots of other little goodies that have this same type of set-up on as well and you can bet i'll be more carefull next time.