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There is only one proven solution - upgrade to true parallel alternators like the 400 series twins. I've sold many of this upgrade to members of this site, with excellent feedback.
Installation requires approximately one hour.
Search this site and you can find detailed info on the upgrade. Or contact me directly at dfwaircraftparts at gmail.com
Cost is $595 deliverd in the CONUS, with tech support included. 30 day money-back guarantee.
True parallel alternators are the solution.
Edit: The exact voltage at which the over voltage light comes on is fully adjustable. Have you verified that it is set at the correct voltage?
Last edited by mshac : 09-04-22 at 01:01 PM.
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