The only reference to Kapton wiring my addled brain can come up with - ISTR an incident involving a Harrier accident in which a Kapton wiring fire may have been involved. I don't have any details and I don't have access to mil docs any more.
It's a vague memory, I'm afraid, but it did lead to controversy at the time about the use of this cabling in other [commercial] aircraft, maybe even to the extent of replacing it fleetwide...