The point of this project is that right now, we have a "DVD entertainment system" a 7inch screen mounted to the ceiling that uses the speakers in the car.

there are multiple problems with this

1.) they have to watch the same thing

2.) WE(parents) have to hear it

3.) sometimes they want to watch a scene over and over, and WE(parents) have to then have to rewind it for them

4.) WE(parents) can not carry on a conversation without hearing from the back "WE CANT HEAR THE MOVIE!! REWIND IT!!!"

most of the problems are audio related, and while its cute that these headrest monitors came with speakers.... they are not going to stay

So at first I just dumped the wires that were running to the speakers to the 3.5mm jack I installed in the front

That was problematic, after looking up the audio amplifier chip they use and looking at the board, I realized they did everything needed on the board for a headphone connector, except populate the connector!

On the left is the speaker connector, on the right are the headphones pads that I soldered to.

Next, controlling the monitor