I have a Dodge Ram 1500 Sport 4x4 Quad Cab with a 5.9L engine. I have been experiencing my front passenger floor board getting extremely wet under the carpet. I have been told it might be the A/C evaporator drain hose being plugged. But, I don't know where it is to fix it. Any ideas?

In 99% of vehicles it's along the dash line on the passenger or possibly center UNDERSIDE of the vehicle. Just a piece of hose draining on the street.