you can definitely buy them from toyota, at least from toyota buhin in japan. cost was around 3000yen
I "havee" a 99 or 2000 version of the wiring manual, but it is in transit, so can7t help atm.
i posted the part numbr in the caldina thread, so you should be abl to at least order that one... however, i can't remember if it covers the 2000 facelift models or not..
Bookmarks