While anchored in Las Hadas (3\82016) anchorage we changed out the electronics switch since this is what we determined to be the problem for our Garmin GPS/chartplotter not working.
The first switch we bought was a temporary switch, you had to hold it in place. Not what we wanted or usable. It took us a over month to get back to the Las Hadas chandlery.
When we went to return it they did not have a simple on\off switch. They did have the bilge pump type switch, the on\off\temporary-on switch. Because it was more than thirty days we could not get a refund and any switch was better than no switch.
This breaker was what was giving us a fit. It worked "sometimes" but not others. It was an original 30 amp breaker that we connected our Blue Seas Marine fuse panel to that we have our Garmin electronics connected to.