Yesterday after starting my '84 300D the alternator light continued to glow a little. I figured that since it had been raining a lot and the entire car was really damp that things needed to dry out a little, so after checking to make sure the belts weren't slipping I headed out for my daily 75 mile trip home.
As the trip progressed the light became brighter and brighter, so I became more and more convinced that the alternator was failing, and by the time I got to my mechanic the pad alert light, brake light and the low fuel alert light were all glowing.
Naturally, I can't get ahold of an alternator for the car here (heck, you can't even get a decent bagel in Peoria, IL...) but the mechanic suggested that I could replace the regulator and that might do the trick, but of course he gave me a regulator that's not even close to being the right size...we didn't run a test (too close to closing time!) but apparently the alternator's still putting out since the car ran for about two hours, part of the time with the lights on, and there's still plenty of kick to the starter.
I checked as many grounds as I could find near the dash, and traced the alternator line into the main duct and didn't notice any problems - cleaned the contacts to the alternator and the problem persists. Can the regulator be replaced (assuming I got the right one?) This particular alternator is the 65amp with two pulleys (so of course it costs a small fortune), and what looks like a regulator is a small black box mounted on the back.
thanks in advance,
terry solomonson