"How did it explain fuel pump wires outside the fuel tank causing and explosion INSIDE the tank?"
I don't recall, except that the theory revolved around a spark INSIDE the tank igniting vapors. The interesting thing was that some of the conditions for the explosion were enabled by unique trauma that this plane had undergone in its past (documented in its maintenance logs).
Sorry but I do not remember the details of the documentary well enough to defend it. The NTSB investigation on which the show was based DID seem rather thorough and did address many of the issues others have raised.
There is another thread on FR right now discussed Flight 800 and at least one of the participants seems to have a much better recollection of this presentation than I do.
I believe there are enough questions about this for the Clinton explanations to be suspect. Clinton had never defended any attacks on Americans and wasn't about to do so. This incident had to be a "Clinton spin special" so he could avoid action and blame.
Please read this: TWA 800's 'Deep Throat' - (FBI, liberal media conspired in TWA 800 cover-up; Clinton wanted closure)
I can't attest to the validity of the information on this site so as always, take it with a grain of salt. lots on the interviews, etc here.. http://www.twa800.com