Go with the SWI-jack from pac. That's what will work with your JVC head unit. If you go on pac's website it will tell you witch JVC head units it's compatible with. Just to add to Guz reply the SWI-jack is only for alpine,JVC,clarion and kenwood with the wired input. The SWI-ps is only for pioneer and sony with the wired input. As for the SWI-x that's a universal piece for any head unit with a I.R. remote. I have installed hundreds of these pieces so if you need any more info just ask. Evan