If the A/C is the only thing you haven't sealed do so.
Also check your marker lights to make sure they are all sealed. Water can travel a long way before being seen inside.
I had one marker light that had a opening about 1/8" that let water flow into the inside of the wall, travel down and sideways about 4 ft. before leaking in behind the cabinets and finally down the wall. I practically had to tear out the whole side waall to track down the leak.
Start where you see the water inside and work backwards till you find the point of entry.