The problem is most likely right underneath the condenser in the engine compartment. Sometimes the AC drain cock gets plugged with dirt, mud or gease and then it backs up or leaks so slowly it leaks back behind the fire wall. If you trace from the drain spout to the inside, you can only see where the water is coming from. I cleaned mine out and put some good silicone around the fitting and have had no water since.
Passenger side floorboard under carpet.
Passenger side floorboard, behind the carpet. You can't miss it.
passenger side floorboard, under carpet or behind trim molding on the right side of floorboard
look under the carpet on the passenger side floorboard may be near the firewall.
ECU is on the passenger's side front floorboard. There are a couple of retaining clips that hold the carpet in place. Remove those and pull the carpet back.
Its on the passenger side under the dash (you have to reach up from the floorboard, and will probably have to pull back the carpet to get to it).
Its pretty much under the floorboard of the passenger side. Start ripping the carpet up where the passenger puts their feet and you'll find it.
It's under the carpet at the front passenger floorboard. Pull up the carpet a little from the top and you'll see a small glass window directly on the floorboard in the middle which contains a flashing red light when the key is on accessory mode. Count the flashes to find the trouble code.
Moisture accumulating on the air conditioning evaporator, often due to mold buildup.
If you are refering to the inertia shut off switch, it is on the top passenger side floorboard. Pull down carpet to the right of transmission hump.
Behind the driver's seat under the floor. Pull the carpet back to expose the battery hatch in the upper left corner of the passenger area floorboard.
HEARTER CORE STARTING TO LEAK .PASSENGER SIDE FLOORBOARD UPPER TOP CORNER. LEAK WILL START TO GET CARPET WET AND WINDOWS FOGGED UP.