"All 65 top wiring routed on the passenger side." I agree!
It is 1966 that is weird. In 1966, Dearborn and Metuchen re-routed the convertible top wiring to the Driver's side, Yet San Jose still left it on the passenger side in '66 !!
I've never seen a '66 San Jose car with Driver's side convertible top wiring. Yet, You will find '66 Dearborn and Metuchen cars with the wiring that way.
My theory (and it is my theory, lol).. is that Ford shipped all the rest of their passenger side wiring destined for the other two plants to the San Jose plant after the re-design. It's a bizarre mystery like everything else. Then again, the San Jose plant always liked to do things different...kind of like a red headed step child..lol..
Tony K.