Ford 1996 Windstar Manual page 350

Always disconnect the battery before servicing high
current fuses.
Ford recommends that high current fuses be replaced by a
qualified technician.
Always replace the cover to the Power Distribution Box
before reconnecting the battery or refilling fluid
reservoirs.
A blown maxi-fuse may be replaced but will continue to blow
until the cause of the overload condition is corrected.
Always replace a fuse with one that has the specified
amperage rating. Using a fuse with a higher amperage
rating can cause severe wire damage and could start a
fire.
Relays
Relays are devices which receive signals from components or
systems. After receiving signals, relays transfer these signals to
activate or deactivate other components or systems. One relay
box is located with the maxi-fuses near the battery and one is
located with the fuse panel under the instrument panel.
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