way off
no offense but a cassette adapter is better than and electronic device that is designed to obliterate every possible situation that the cassette adapter would employ?........huh...........good one. think about it, you are transfering information input through a single sheathed wire...
this is an inexpensive way to do it
buy yourself an alpine fm modulator, it can be used for controlling aftermarket electronics through an fm signal, the reason i say to use alpine is because the competitors such as panisonic and audiovox (in my experience) caused alot of engine noise, you know...