Yeah, I think that's why Tracy had 2 pins for power. The DB37 pin connector is mounted directly to the circuit board, so while not particularly difficult to add a new power connection plug with feeds onto the board, at this point I don't want to reinvent a wheel that has already been flight proven.
I'll just add a couple of diodes at or just before the connector to have separate feeds. This will protect against any loss of power due to wiring.
Actually the whole reason this has come up is....
Long ago I had a panel of fuses as per Electric Bob's advice. During my initial flight testing I had a couple of nuisance trips on things like the flaps. I don't recall any on anything serious. But in the years since, I was seduced by the idea of circuit breakers and convinced myself that this was a better idea. So at great effort and some expense I changed out all 37 fuses for CB's (yes that's right, I said 37). Click this link to see pic of panel to see why it was difficult to do.
I know that it was probably a waste of time & money as the fuses were equal if not superior.
Anyways in the time since, as I've been working under the panel, wiring, testing, etc, I managed to accidentally pop a few CB's, but what was disconcerting was that one of CB's was toast and not able to reset at all. Now admittedly these are not aircraft grade CB's (like most of my plane), but they are affordable and they fit in place of the previous panel mount fuses and I've had good service from them in other applications (I replaced all the panel mount fuses in my camper with them long ago).
So I analyzed my electrical system and everything else that is critical to flight already has redundancy with their own power feed such as primary & secondary injectors, leading & trailing coils, 2 fuel injection pumps, etc. The only weak link to this is the EC2 power supply and in the extremely unlikely event of a short in the wire supplying power and either the inability to reset the breaker or continued tripping due to a continued short, then a redundant power supply would avoid the "dark & stormy night" scenario.
Todd (If I didn't like building stuff so much, I don't know what I'd do with all that time & money)