Need Help in fixing Roper Fridge that is leaking water into food from freezer?

I need to know where to locate the drain hose connection mentioned in a previous answer. No book Model RT18HDXDW03 mfg 10-95. I pulled out from the wall & there isn't a drain hose down the back. I am defrosting as suggested but if hose is clogged I need to know where to find it & how to remove & unclog & replace it. Thanks.