I'll straight up just admit it; when it was dark I tried jumping my 1971 Pontiac Lemans and connected the positive and negative terminals on the opposite side. Ever since that happened the car has not been able to start, I'll try to jump start it but it barely gets any power. The headlights and other lights work all right, but it does not have enough power to start the engine. I took the battery in to a auto parts store and they said it was fine. I am at a loss at what to do. Help is really appreciated.
