So,

My R50 stopped charging last week and looked into potential failures.. I changed out the alternator and the crankshaft pulley with a WMW solid pulley. Reinstalled everything and bam charging was back. The Alternator was less than 2 years old and had maybe 500miles on it. I had planned to get it tested and went to 8/9 different locations and none could test it. Either ranging from not the proper connector (N-28) to not having the proper mounts (thanks side mount bolts) to not having a working machine (2 advance auto locations) and the NAPA I went to not having a tester. I wanted to confirm that the alternator was dead before I sent it back for the core charge and that it was potentially a belt slip issue due to the pulley (saw noticeable failure on the rubber though). Anyone else run into an issue not being able to test the Mini alternator?

 

Same round around for me. Finally started calling all the advanced auto locations to find one that said their machine was working. Luckily I'm in an area with a dozen or so within 15 miles.