squonk 38,844 #26 Posted June 20, 2020 Well I think I have something wrong with the regulator itself. I replaced the wire on the regulator and connected the center flag of the regulator to Bat positive like it is supposed to be. When turning the key to on the engine cranks. Checking the terminals on the switch I have continuity between bat and start with the key just at run position. If I remove that wire at the center flag of the regulator this continuity goes away. Share this post Link to post Share on other sites
ebinmaine 62,953 #27 Posted June 20, 2020 Got another regulator you can swap in for diagnostics? Share this post Link to post Share on other sites
squonk 38,844 #28 Posted June 20, 2020 I should have one. I also got another genny. It kind of bugging me how that wire got burn't 1 Share this post Link to post Share on other sites
ebinmaine 62,953 #29 Posted June 20, 2020 Best do a bench test on the Genny just for kicks. It's more likely the VR is bad. That wire would most likely have to be a dead short to melt that much then break apart. 1 Share this post Link to post Share on other sites
squonk 38,844 #30 Posted June 20, 2020 Here's my theory Eric. I noticed heavy pitting on the coil contacts the wire connects to inside the regulator. The contacts stuck closed. The center post being connected to ground sent heavy amperage through that wire when in the cranking mode. Whatever was in the battery went thru the switch ( Craig found it burnt) out the heavy cable to the armature connection on the genny thru the small wire I found burnt through the stuck regulator contacts to the center regulator post to ground ( wire connected to bat ground instead of bat posituve.) 3 Share this post Link to post Share on other sites
ebinmaine 62,953 #31 Posted June 20, 2020 Certainly sounds reasonable. Can those contacts be cleaned and the VR used? Share this post Link to post Share on other sites
squonk 38,844 #32 Posted June 20, 2020 Pretty pitted. Looked like a bunch of metal transferred 1 Share this post Link to post Share on other sites
953 nut 51,507 #34 Posted June 20, 2020 Mike, if the pitting isn't too bad you can remove the contact arm and file then burnish both contact points. A little soldering is involved but nothing too difficult. Share this post Link to post Share on other sites
squonk 38,844 #35 Posted June 20, 2020 WE HAVE A WINNER!! VOLTAGE REGULATOR!!! 2 1 Share this post Link to post Share on other sites
kasey54 304 #36 Posted June 20, 2020 With all you have described, I'd put a test meter to the ignition/starter switch as well. Share this post Link to post Share on other sites
kasey54 304 #37 Posted June 20, 2020 Reading back, it appears you already checked the switch, disregard! Share this post Link to post Share on other sites
squonk 38,844 #38 Posted June 27, 2020 https://www.upstartautoparts.com/colehersee-pl-20-rc000-pilotlightredlens.aspx 1 Share this post Link to post Share on other sites
