hmmm so you have twin dvd's?
i do not have the originals...
i have this:
this ones have a button on the side off A or B depending on which screen you want to hear the sound from, the IR emitters are located in front of each dvd on ceiling. Should not matter how many headphones are connected.
for the remote... the car should of come with one.... only one like the one in your link ;i already bought the other 2 variants and are not working as one is for single dvd(the switch on the side is to select dvd1 or dvd2) and the dual with RGBY(red green blue yellow) buttons towards the bottom of it wont work either... should not need pairing.
workaround for myself for now is put a dvd on one screen in the ves and the other in the main unit and set it up for second screen you can mix and match as you want... like same dvd from main unit to play on both screens or the one from ves unit to work on both screens or one dvd on one and the other on the other...
this would be the remote in closer pics
my one is in customs and i am having second thoghts to pay the extra charge i received i have to pay today.(already paid 95£ including delivery) but because the seller declared a very high value on the parcel....seems that customs want me to pay another 35£... so be aware of buying things with high value from USA exceeding a certain amount.