For your Car:
Instead of searching blinly for a source of drainage and guessing every bulb individually.. why don't you take a dvom and look at the amp that is drain on the battery? then you'll know if you need to hunt for ghost or not!..
Open you Frunk, plug the Amp-meter in serie with the battery, that front trunk light should go off by itself after a few hours.. after a day or two if it's still taking alot of power out of the battery THEN you can start searching for a cause.. now your just searching for a leakage without looking if there is any water on the ground :P
For your Battery:
Charge your battery, and let it sit on a table with nothing plug on it for a few days, look the voltage often.. Initially it will have a little drop for the first few hours, but if it continue to drop under 12v, then you know you ahve a bad cell and your battery is shoot..
If it keep it charge, you can try a 'battery tester' to see how well it recover from a heavy load..
If it dosn't keep it charges or don't recover well from a load, Get a new one
