I just purchased my first Volvo - a 1990 240 wagon with 151k miles. I flew to Providence and drove it 1,000 miles back to Kentucky. Late in the trip, it started losing power. We were driving at night, and I noticed that dash lights were getting dimmer and dimmer. I also noticed that when I used anything else in the electrical system (turn signals, etc), the power grew noticably worse. We waited for light, and it seemed to drive OK for a while without the lights on, but as we neared home, the engine seemed to slowly lose power. The car would idle fine, and you could see the lights on the dash get noticably brighter while it idled. But when placed under power, the engine just didn't want to respond. Any ideas would be much appreciated.