No problem.

It actually rang a bell. Mainly because Harry Dean Stanton was associated with Sam Peckinpah.

Anyway, long story short, in the end I figured it may have been based on a book, so looked for books and there was the book and it led me to the movie you wanted.

Just an aside, in some of his movies he was called Dean Stanton, not Harry Dean Stanton.

take care there.