Connecting headrest monitors to Kenwood DDX-6019

Youll have to run sets of cables from your head unit to the seats, youll prob only need video, power, and ground if the sound will come from your speakers. For the same display on either monitor run to first position then link the 2 monitors.

I need the audio b/c the monitors have built in IR for the wireless headphones I purchased. Crutchfield has a connection box that comes with their Vizualogic headrest monitors and that is what I need. It allows two outputs for monitors and up to three inputs for my DDX-6019 and maybe a video game system or other device. I just cannot find this connection box as a seperate accessory. I thought for sure my TKO headrests would have come with this!