Original Jews were black or africans?

More likely the jewish connection is a leftover from King Solomon's mighty Kingdom (peace be upon him). Thats why hints of Judaism are found throughout Africa. Allah (Most high) tells us in the Qur'an:

Solomon said: "My Lord! Forgive me, and bestow upon me a kingdom such as shall not belong to any other after me. Verily, You are the Bestower." Allah said: "This is Our gift, so spend? you or withhold, no account will be asked." And verily, he enjoyed a near access to Us, and a good final return, Paradise. QUR'AN 38:30

So Allah gave Solomon a never to be equaled vast magnificent & beautiful Kingdom. Even the wind blew at King Solomon's (peace be upon him) command & he had authority over the jinn & even the birds who would 'bomb' his enemies with stones.

From Qur'an: And Solomon inherited the knowledge of David. He said: "O mankind! We have been taught the language of birds & on us have been bestowed all things. This verily is an evident grace from Allah." And there were gathered before Solomon his hosts of jinns & men & birds & they were all set in battle order (marching forwards). QUR'AN 27:15