Here's a transcription of James Jamerson's bass part on Darling Dear (The Jackson 5, Third Album, 1970)
I used tab for this one, because Jamerson used a lot of unconventional fingerings. In my opinion, it is essential to use those fingerings to get closer to Jamerson's sound. Of course, I wasn't at the session, so this is only an educated guess. YMMV.
I'm trying to play this transcription in this video: