Is it possible to make all 4 windows roll down (and possibly sun roof) by holding down the unlock button? The front 2 but after being in my freinds acura tl it is very nice to have everything roll down...seems like simple wireing issue, has anyone tried this? and how?

 

It should be very simple, just tap into the BCM wires that control the window rolling down for front to and connect that line to the rear two. I'd take a look at the wiring diagram later to see if its possible for sure.