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Re: Added a remote Onan switch [message #367370 is a reply to message #367337] Thu, 28 October 2021 19:04 Go to previous messageGo to previous message
RF_Burns is currently offline  RF_Burns   Canada
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
Senior Member
So when you "jumpered from the battery connection on onan starter and to the plus side of the coil" you made the same connection as the Prime Switch does. This jumper will bypass the control board and so is not an indication that the flywheel alternator is working.

Start the Onan using your jumper as above, then measure the voltage between pins 5 & 8 on the control board. You should read between 25 to 20 volts AC... yes AC NOT DC.

If you get that reading, then pull the wire on pin 12 and remove your jumper. If then engine continues to run, then get a new oil pressure switch. If it quits and you have the correct flywheel alternator voltage, then you likely need a new control board.

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

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