Re: Yamaha NEMA 2000 & Garmin 5212 HELP!
I agree with your assessment of the situation. I'd change it. I'm not a Garmin owner so I do not know what specific options you may have with your unit. When I had an external GPS antenna, it was originally connected to "always hot" bus bars, and it took me a long time to figure out why my dedicated "electronics" battery was running down so fast. An in-line switch solved that problem. I just had to remember to turn my GPS antenna "on" along with everything else. With my new stuff, my GPS antenna is "internal" with the display and is powered up only when the display is "on" ... killing two birds with one stone, as my display is powered independently from the starting batteries/ignitions switches.