I have called all over for this... (Sony, Crutchfield, etc.) Good luck... I am trying to extend a 3 foot uni-link wire from a XM radio to my head unit. I have a 8 foot cable and 3 foot cable but have no way to connect the two male ends together... Let me know if you know a solution to my issue, and I will do the same if I find a place to purchase the female side of the adapter. Mike