I’m on my smartphone, but if you want to do the research you might want to start with his receiving the endorsement of Ralph David Abernathy in 1980.
Of course you qualify your statement with the term “unique needs”, which no one is really talking about and could be interpreted as a strawman.
If black voters’ needs aren’t unique, then why is a unique sell necessary? Just sell conservatism, a al Reagan, & win voters across racial lines.