Usually the part that fails is the diode trio - a little black rectangle with 4 flat wires coming out. 3 go to the rectifier bridge (the finned piece - also with diodes and the next most likley culprit) and the 4th to the regulator. Ken Ames Quoting Teamamc <teamamc@xxxxxxxxxxx>: > I have an 81 Eagle SX4. > Yesterday on my way home the alternator idiot light came > on. I pulled the Positive cable with the engine running > and the alternator is still charging. > I notice that when the engine idles really slow to the point of stalling the > light goes out. When I turn the key to start the Car the ALT is out. after > the engine starts the ALT light comes on. > > Any Idea on what would cause the aLT light to reverse itself. > Thanks > Bryan > > > > > > ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/