Hi-

I bought a 1987 245 with 86k last October from someone who (it turns out) wasn't taking very good care of it. (And yes, I did get it for cheap). In November, I had both the battery and the alternator (a factory rebuilt Bosch) replaced. Just a few weeks ago, I noticed that the battery indicator light on the dashboard sometimes (but not all the time) glows dimly right after I start the car. The first time this happened it went out after 2 minutes, but now IF it happens (about once a week) it stays on the whole time the car is running for short (half-hour at most) trips. Also, even when it glows dimly, the car starts and runs fine. Only once has it "flashed" to bright, but then went back to dim. Like I said, it doesn't happen all the time, but I'm at a loss as to what is causing it and am concerned there is something more wrong with the car.
I generally don't trust mechanics, and would really like to get to the bottom of this myself, but am not totally sure where to start - instinct says to check the wiring harness and alternator connections. Where else should I be looking? I was hoping to use the car for some longer roadtrips this summer, but right now I just can't trust it. Please advise!
Thanks,
Kathryn