fuse location

my automatic door lock is malfunctioning, killing my battery. i have no fuse diagram so how do locate door lock fuse? i have a 1997 dodge van 2500

Try autozone.com, repair guides.

Fuse diagrams for the van should be in two places; the owner's manual or the lid for the fuse panel.

If you have neither of those, consult a shop manual or the dealer like wedge says.