Noticed my1998 Explorer was getting hard to start and checked battery, and just sitting not running, read 11.4V. It was at the end of the warranty period and figured, it's time. Went and got a new one, popped it in, read 12.5V. Tried starting the car, and it would crank, but not turnover. This is when I noticed the red battery light on dash. Any ideas where to start checking? Alternator? (seems pretty easy to take off and go get it tested). Fuses? Seems strange just replacing battery with a new one caused red battery light to come on...
Thanks in advance..