The JVC is the CD/DVD/receiver from a HTS so it doesn't have any audio outputs.
You can connect a speaker to line level convert to the front speaker terminals to provide a stereo analog audio output.
https
/www.crutchfield.com/p_142LOC80/Scosche-LOC80.html
Turn off any surround sound on the JVC to get correct stereo output. Here's the manual
https

/www.manualslib.com/manual/82970/Jvc-Lvt2054-002a.html?page=9#manual