My 85 4Runner's brake and charge dash lights come on when I start the truck, and usually stay on until I get the wheels rolling forward. After a few minutes of driving, the lights turn out. Lately the problem has gotten worse, with it taking longer for the lights to go out, sometimes a few miles. The engine starts rough about 1/2 the time, but once it's started, other than the dash lights, I have no problems. I just replaced the starter, and the battery is newer optima red top. Any ideas? Alternator, wiring harness? Thanks.