formariz 11,849 #1 Posted July 22, 2018 I need to do some testing and determine if I need to replace the rectifier on my 97 520H. Is it a 20AMP or a 35AMP rectifier? Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,478 #2 Posted July 22, 2018 click on the picture Garry Share this post Link to post Share on other sites
formariz 11,849 #3 Posted July 23, 2018 (edited) I definitely need a new rectifier. Have 7+/- volts at B terminal. I do have 49.7 volts at C terminals during full throttle. Seems a bit high for a 20AMP ? There is a gray wire piggy backing one of the C terminal wires. Cant seem to identifying it on schematic. It is definitely stock. Does anyone know its purpose? I presume it is AC current. Edited July 23, 2018 by formariz Share this post Link to post Share on other sites
RubyCon1 62 #4 Posted July 23, 2018 grey wire = rpm signal to tachometer Share this post Link to post Share on other sites
