I have a Johnson GT 150 that developed a charging problem. First it was overchraging at around 16 volts then stopped charging and the tach quite working. I talked to a few people and was told that it was the regulator/rectifier. I ordered a new one and installed it and it still doesn't charge and the tach doesn't work. I tested the new rectifier in the way I read in the forums. I put my Fluke DVM on the diode tester and placed the black lead on ground and put the red lead on the yellow, yellow/gray, and red and the all read the same at about 2.0 on the diode tester display but no tone at all. Reversing the polarity and the readings went to zero. I then placed the black lead on the red wire and placed the red lead on the yellow and yellow/gray wires and got about .2 and a quick beep but no steady tone on the Fluke. Reversing the polarity I got nothing. Should I be getting a low enough resistance to get a steady tone on the diode tester? I also checked across the yellow and yellow/gray wires coming from the stator and they showed 22-24 vac with the engine running and idle--does that sound correct? Anything else I should cheack? Thanks for the help!!
