I have an older M-Bus Alpine 5952 cd changer that has an 8 pin din plug and 2 RCA plugs for the left & right channel. My new CDM-7871 Alpine head unit has the M-Bus 8 pin din plug but no RCA plugs for the left & right channel. Apparently, the newer M-Bus design incorporates the left & right channel into the din plug. I need an adapter to convert my din and RCA plugs into one 8 pin din plug. Anyone know where I can get one?