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Registered
Join Date: Apr 2001
Location: Linn County, Oregon
Posts: 48,902
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Have a multimeter? Maybe check battery voltage at the posts when you believe both batteries charged by the alternator. Not all new batteries test great, depending on how long they were in the system before they were sold.
A little $pendy at around $70, but I recently bought a harbor freight battery tester that measures milliamps between the posts. Has good reviews on youtube...more accurate than a load tester. https://www.youtube.com/watch?v=kNyiigm7x14
I dunno...maybe replace the yandina with some sort of manual 3 way switch, carry a multimeter to test voltage?
Anyway, sounds as if your current maintainers aren't putting out enough for your yandina to open up and charge both. Your alternator if working well should be putting out around 14 volts.
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"Now, to put a water-cooled engine in the rear and to have a radiator in the front, that's not very intelligent."
-Ferry Porsche (PANO, Oct. '73) (I, Paul D. have loved this quote since 1973. It will remain as long as I post here.)
Last edited by pwd72s; 07-08-2019 at 11:31 AM..
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