today the battery gauge slowly went down
I figured alternater or starter drawing too much

I needed a jump at end of day, and after.... everything electrical went haywire

the car wouldnt even run right
any suggestions , diagnosis?
please

thank you

 

I have a 2000 SS. When I first purchased the car, the deck was disconnected. When I took it in to get my aftmkt deck installed, I found out that the stock speaker amp was drawing power from the car, even after it was shut off, thus it had to be disconnected (and also why my stereo didn't work to begin with). You might want to start there and see if that changes anything.