No rebuttal is worthwhile to a conspiracy theorist. Take care.
A rebuttal is necessary to any facts presented which conflict with the account one is trying to promulgate.
You don't get a pass by calling the other opponent a "conspiracy theorist." You have to refute the evidence.
Aircraft Mechanics do not do shoddy work. They are licensed and required to know what they are doing. Aircraft designers are well acquainted with keeping power wiring separate from signal wiring.
The 747-100 is not an experimental plane. It is a well developed plane with an extensively tested design.
The claim that it had an 80 joule discharge (80 amps of current for 1 second) is bullsh*t.