I think I have some new red diodes for theses. I see them on ebay as well. teamamc@xxxxxxxxxxx ----- Original Message ----- From: "Gary Walker" <NashFlash@xxxxxxxxxx> To: "AMCList" <mail@xxxxxxxxxxxx> Sent: Sunday, December 12, 2004 10:33 PM Subject: Diodes > The isolation diode is the big red one on the outside of the alternator > case. This may be the only one that is damaged. You can change it with > the alternator in place. Inspect it by checking continuity in both > directions. Current should flow in one direction only. If it is found to > be good, and the output is still not over 14 volts, then clean the armature > where the brushes rub, Check the brushes for length and free movement, and > if that fails then pull the smaller diodes on the inside and check them for > current flow in one direction. At this point, go ahead and replace the > bearings with new sealed bearings from a local bearing house. They are very > inexpensive. Some parts houses may still have the diodes. > Your AMC friend, > Gary Walker > Owner of some old AMC cars and stuff > > > > >