Nice of you to share the information Steve. That represents the best
opportunity for other conversions to be successful. Glad it worked out as
well as it did.
There are all these patterns to failures. I've found it's important to
understand the patterns. Other pilots will read your report, feel
uncomfortable, decide they need to........... but gradually this
discomfort will fade. And they still haven't taken the action they need
to take. So it's important to write down your action list. If you write
it down in 12" high letters and post at your work station, you greatly
increase your chances of taking action...because you've increased social
pressure.

We had a crash just two months ago with exact same root cause. Electrical
failure causes loss of power. Keith too crashed for same reason 2 years
ago. Our installations are at much higher risk than Lyc because we are
power dependant. So we need to be most thorough in this area.

So let's consider the "other" causes.
1) All crashes are the result of change. So when you were improving your
wiring, that change opened you up to new potential failures. So any time
we work on the plane, we take a minute before we close it up to seek the
inadvertent change. We look around, wiggle things, try to find our
oversight.
2) Why don't auto's have this same failure? I noticed on my engine they
have multiple sources for ground. Something like 5 attach points. Two
power sources to ecm. They have all wires in looms, so you can't strain
one wire. Looms have anchors, so you can't strain the looms. So there is
great value in understanding why other installs are successful. We seldom
notice stuff like this.
3) We go brain dead in emergencies. We focus better in some ways, but
lose stuff too. It's pretty interesting. So practicing failure is
valuable. I've found even more effective is using  graphics, audible
warnings, computer monitoring. So, the computer would have found that
first 10 ms power blip when you fired up the plane. Perhaps not.

Off soap box. Thanks for sharing info. I've added "review ignition
wiring" to my list.



-al wick