You can find a fuse block diagram in either a Chilton manual, a Haynes manual or a factory service manual.
On some cars there is a sticker in the engine compartment with a belt diagram.
You can find the wiring diagrams for a Chevy Celebrity in either a factory service manual or either a Chilton or Haynes manual.
There should be a diagram of the vacuum lines on the passenger side shock tower.
check google images
Try Chilton's Electrical Manual
Auto Zone and Advance Auto
You can find a 1986 Winnebago, with the Chevrolet 454 cubic engine, vacuum routing diagram at most Chevrolet dealerships. The vacuum routing diagram can also be found in most Chevrolet engine service manuals.
You can find the 1986 Chevrolet vacuum line diagram at most Chevrolet dealerships. The vacuum line diagram can also be found at most auto-parts stores.
I would suggest you try your local library, they usually have car manuals you can look at for free.
You can find fuse block diagrams for your 1989 Chevy Celebrity in either a factory service manual, Chilton manual or Haynes manual. If you don't have a manual your local library may have a Chilton or Haynes.
usually there is i sticker on the core support showing the vacuum diagram. If its not there then i would spend 20 bucks on a chiltons manual.
I find no reference to anti-lock brakes in my factory service manual or other reference works so I assume that they were not available in 1986.