1991 Acura Integra grounding issue?

well i got my battery and alternator tested and its not those, but whats happening is on a fresh battery my car will run all day then at the end of the day my car will die slowly like the alternator isnt charging. my buddy helped me and all he did was go out and wiggle my terminals on my battery and it worked fine until i started messing around with it. So i cleaned the corrosion off the terminals and wires and tightened everything down and its still doing it everything is tight on there and no corrosion no problems starting just constantly kills my battery so i have to charge it everyday any ideas?