I have a 2000 Ford Expedition. Every day I have to get a jump. I had the battery and alternator tested and was told they are good. When my truck doesn't start my interior lights and when I do get a jump my clock is still set at the right time. Also my locks go off at random and most the time I have to hold the Lock button down for it to stop.

I think it's your alarm system that is draining your battery own. It's got a ground problem and will continue on until it's changed. For a test unplug your door lock and alarm system connectors from their assemblies and check if that cured your problem. Let me know Gabe.

Clean the battery terminals and also check for a Good Ground - use a star type washer and connect the negative battery lead to a clean grounded steel part like attenator bracket for example - if the existing grd is rusty that may be your problem