Took the Hitachi LR155-20 alternator that had been removed from Constance on 16 January 2017 to Pasco Battery Warehouse for evaluation. The alternator was hooked up to their test equipment and failed to light a lamp indicating that the alternator was not outputing any current. Overhaul is $125. Replacement is $250. All parts are available but for the rotor. Time to consider what to do from both a short term and long term perspective.