Nooo.....I want to continue to think INSIDE the box.
I may look at this approach, however, I've considered removing the compressor from the Garmin altogether and using a "hard" switch instead. It struck me after I discovered it on my trip that more "critical" things should probably be set up more simply. I had solved in my head how to hardwire it directly if an emergency arose but it forced a re-thinking of what I plug into the fancy but perhaps trouble-prone new technology.
Right now, the irritating thing is not knowing WHY it's a problem.