I own a 1983 280ZX non-turbo. This is the second brand new battery I have replaced. The first one was returned under warranty and they gave me another one five months ago. Now the new one die on me. I recharged it and when I installed in the car all the parking lights start blinking, even with the engine running. I know that is not battery problem. Any opinion about this? How can I fixed without going to a Technician and paying a fortune? I really appreciated any advice. Thank you very much.