Picasaweb is the fastest writeup method for Picasa users, and I've shared it with several forum members over the last few months. But, I'm happy to transfer it to this thread if it makes it easier on folks. I used PostImage.org for the image hosting. Here goes:
Start by removing this bolt:
gently pry your way around the inside trim panel with a flat, blunt object. you'll hear the anchors pop one by one.
the plastic panel being pulled away from the door:
this is what you will see - the photo is taken right-side up. i also pulled off the rubber strip running along the top of the red metal panel before taking this shot. remove the bolts around the black metal panel. don't mess with any of the electronics.
you'll then have to pop out these nylon anchors.
this wiring assembly is anchored to the sheet metal via this rubber post - give it a yank.
the old latch.
the old latch removed, showing the dusty/corroded latch assembly.
this is the other end of the latch assembly - you have to unplug the wiring harness and undo the cable end from the slotted armature.
new latch on top, old one below.
part number for the new latch for my 1997 runner.
another side-by-side.
by the way, before i started i supported the black metal panel with some string so the wiring didn't get stressed.
great time to clean up the panel!
the new latch bolted in, using the 3 old bolts.
Be sure to give your new latch a little lube once or twice a year.