Door locks cycle on and off while driving in wet weather

What is your question?

Door locks cycle on and off. Happens during wet weather and usually takes 2-3 hours of driving. Sounds like there is a relay shorting out so that even though the doors are already locked, it attempts to relock them. If I unlock doors using the rocker switch, immediately locks them. Then the lock mechanism tries to lock them again, and cycles through this every 10 seconds to 3-4 minutes randomly. Is there a relay under the hood which might do this when moisture enters the engine compartment? If so, where is it located and what is the part number. Help! This is driving me crazy!