Jerry,

I concur with the other members commenting on a possible high resistance connection. Its not burned at the end of the connector and it is not burned further back up the wire.

I copied the 3rd image and magnified it as best I could - although the resolution isn't real good at that point - it appears that several strands are cut and turned out on the right edge of the burned spot - if that is not an illusion of the photo - the reduced current carrying capacity of the wire connection could account for a hot spot with everything else being normal.

It can happen where some strands are accidentally cut off or damaged in the stripping process; or, strands cracking off due to vibration; or a crimp that has loosened up, or some of the strands did not get captured within the crimp etc. - any one of which can reduce the current carrying capacity of the wire and cause a local hot spot - as it heats up resistance increases with greater heat developing and the vicious cycle proceeds till enough heat is developed to raise some smoke.

Sometimes a bum connection can be found before smoking the cabin by frequently checking all connections visually from time to time in the wring-out period.

If a person carefully picks apart the insulation and connection - I bet you will be able to detect a fault of some kind which may have caused your smoke problem.

Also goes to show you that keeping your head is what it takes to manage the emergency and avoid any unnecessary problems - just because a person has some smoke doesn't mean you can't handle the aircraft - you dealt with it well.

FYI - a friend of mine had an electrolytic condenser on an old certified airplane explode under the panel with a loud bang and much smoke on the takeoff run - a quick abort, shutdown and fairly expedient departure from the aircraft followed - although it was an impressive attention getter - the likelyhood of a real fire was pretty remote and never occurred - but you don't know that at the time.

I bet you will figure this one out soon.

Sincerely,

Dave S