I tried to install an Alpine UTE-73BT head unit into my 2004 Disco but I do not have a 20-pin speaker adapter to RCA. The original unit has a male connector for the speakers but the new unit has female RCA ports. I've searched the web endlessly but to no avail. Any suggestions would be appreciated.

 

Here you go. Lots of thread on the topic if you use the search function

 

I purchased that one thinking it would be the correct harness, but it does not fit the factory wiring. The female adapter I am holding in the picture is what I am looking to convert to RCA.

 

I tried the adapter you mentioned but it did not fit the adapter I am holding in the picture. Any other suggestions?