You can find a vacuum diagram for a 1991 Ford Bronco 351 Windsor in a Chilton repair manual if the Haynes manual does not have it. You can also check with local auto stores.
go to autozone.com, they have free pics
can you show a diagram of the vacuum hoses for the 1994 ford explorer with a v6 4.0L pushrod engine?
It is important to have a diagram when making changes to a car. The vacuum line diagram for a 1994 Ford F-150 can be found in the maintenance manual to the vehicle.
the diagram should be under the hood on the sticker with the emissions information
You can find a 1992 Ford Bronco cooling system diagram at most Ford dealerships. The diagram will be in Ford service manuals at your local library.
autozone.com has online manuals you can get that info from
1984 ford bronco
under the hood or inside the door jam
You can find a free Ford F1 50 vacuum diagram at most Ford dealerships. Many auto-parts stores will have the vacuum diagram.
vacuum line diagram
You can find the fuse box diagram, for your 1989 Ford Bronco, by taking the fuse box cover off. The diagram of the fuses is on the bottom of the cover.