I have a 97 F150 V6 that I have recently started having problems with the power door locks. I have had the truck for about 5 years and have never had a problem. Also, all the other electronics work fine (knock on wood). I replaced the 15 amp fuse and it worked for about a week then blew. Then I replaced it with a 20 amp (maybe not the right thing to do) and went about 2 weeks before it blew. I do not have a key fob and never had one for this truck. Anyone with similar issues?

 

Yup. Same exact issue. Was looking for a solution when I saw your post.
If I find a solution elsewhere I'll post it back here.