chev0545 234 #1 Posted June 27, 2021 how to test a rectifer on a 76 121 thanks Share this post Link to post Share on other sites
pfrederi 17,741 #2 Posted June 27, 2021 You should get over 13.5 volts at the battery with engine running. if not Run a jumper wire from the regulator body to the Battery Neg terminal. Still no improvement?? Switch you multimeter to AC and read the voltage across the two white wires that feed the rectifier. you should get over 30 VAC engine running fast. If you do the replace the regulator.... 4 Share this post Link to post Share on other sites
pacer 3,173 #3 Posted June 27, 2021 One thing to add to Pauls excellent walk-thru on the check -- the 3 prong conx point (at least in my experience!) is somewhat prone to corrode, so give it a once over too.... 2 Share this post Link to post Share on other sites
