| Another Lesson Learned the Hard Expensive Way [message #315021] |
Wed, 22 March 2017 14:17  |
A Hamilto
Messages: 4508
Registered: April 2011
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So today I decided to tackle the self-appointed goal of reconnecting the Onan Voltage Regulator to charge the dedicated start battery (disconnected by a PO for unknown reason, maybe because he saw on GMCNet that is is a good idea, even though it is not for Onans with a dedicated start battery). For those not in the know, early models had a the dedicated start battery for the Onan instaed of using the house battery to start it. Disconnect the Voltage Regulator and the Onan will run down its dedicated battery after some hours of running, and then die.
So I was looking for the wire that ran from Pin 8 on the board to the VR. There was a wire on pin 8, and it ran towards the bottom front of the engine. There was another wire with one taped up end near the VR and it ran someplace towards the bottom front of the engine.
I wasn't smart enough to connect the dots until I had the front cover off the Onan and the flywheel cover and discovered I still couldn't see anything.
So I started thinking. Note to self, do the thinking before the working. This particular model has the splitter (for getting the flywheel alternator voltage to both the VR and the control board) AT THE FLYWHEEL ALTERNATOR instead of at the VR.
So I put the front of the Onan back together and connected the wire from the flywheel alternator to the correct AC pin on the VR and the loose ended wire from pin 5 on the board to the B+ pin on the VR.
Could have done that in seconds instead of ah hour or so. And I can return the $2.69 splitter that I bought at the auto parts store for a refund.
Has anyone else seen an Onan wired like that? 4k in a 1973 23' Sequoia.
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