Cummins/Onan FM-JFE2 — Battery Connection
Installation
For the Cummins/Onan FM-JFE2, from the Cummins/Onan service manual.
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Procedure
- Observe polarity between batteries.
- Connect positive post of one battery to negative post of the other.
- Connect remaining positive post to positive post on control panel.
- Connect remaining negative post to negative post on control panel.
- Cover terminals with petroleum jelly.
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.