[nyjets28]

what do i need to make a new fa-003 cable? i'm not sure what type of plug goes into the headphones

 

[JamesMcProgger]

judging by this photo
 

 
its a regular 3.5 stereo plug to two mono plugs, L and R.
 
One thing you might want to ask to a FA003 owner is if the jack in the cups is recessed, if it is, the regular plugs wont fit there and you would need a low profile one, with a thin barrel. (like the ones "iphone compatible")

 

[svyr]

the socket in the cups locks very firmly into the plug rounded plastic rim. As suggested in the Fa-003 thread, there's a chance your new plugs will not hold in.