My stereo has the capacity yo be used as a a telephone but I am unable to mak this function work.
The manual is quite vague on this topic. What do I nee or do i need a ne stereo?

Kkelso
1996 Black limited
17000 miles

 

Stock radio? Aftermarket?

Are you talking about a Crossfire?

 

If you have the factory unit you can get the cabling from Becker. linkhttp://www.beckerautosound.com/parts/cable_part_number.html