I went to go swap out the alternator on the car hoping it would fix the problem. Well I got there, unplugged the wiring harness from the alt. and it had quite a bit of corrosion on it. So i scraped it down with a wire brush, put the battery back in the car (that Kragen said was charged and "good"), hooked the alt. back up and the car started right up.

I drove it about 60+ miles home with no problems. For about half the time the battery light was on, about half the time it was off.

I then took the car to Kragen for what they advertised as a free electrical system test. The guy came out with some kind of computer. Hooked it up to my battery, had me start the car and after a few minutes said "it says you need to replace your alternator." So I don't know how reliable their test/test equipment is, they weren't trying to sell me anything as I had already bought the alternator earlier in the morning.

Would you trust their diagnosis?