I have finally found one in Whales on ebay. My local BMW dealer was not of much help. He could not get me even the entire harness, and at the wreck yard they would only sell me a whole door. I googled this number on the socket as you said, its 8383264 and came up with curtain airbag wire, not side door airbag. The dealer could not find the number in his system anyway.. Maybe the bloke I bought this from have been doing some modifications? 😂 Anyway, ordering the part now, and lets just pray its not broken on the pins as well 🙄

Thanks for the help guys.