Hi
I figured out the way to add a line in to the JVC
I soldered wires to the cd input on the board L G R
& then went to radio snack & bought a 1/8 stereo jack
installed it and it sounds great
you just have to put it on cd to get the sound from the mp3 or other source
I figured out the way to add a line in to the JVC
I soldered wires to the cd input on the board L G R
& then went to radio snack & bought a 1/8 stereo jack
installed it and it sounds great
you just have to put it on cd to get the sound from the mp3 or other source

But Superduper is right and you should have routed a cut off for cd to disable when line in is plugged in. Just as precautionary measure
but I would do it so you don't face problems down road