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Post Info TOPIC: Onan Genset Replacement Problems


RV-Dreams Community Member

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Onan Genset Replacement Problems


I have a 91' American Eagle with an Onan 8KW Generator in a front slide out compartment. The Generator is an older open faced type and seen its better days. I had it checked out and my best bet was for a complete replacement. In order to get a step up on the labor costs for a new install I decided to remove the unit myself. My thought was to remove the unit and drive it to the dealer for the new install. The removal went simple enough along with the Control Box harness wiring and Battery cables, Fuel lines  and electrical Junction Box Wiring. However, when I was done I tried to start the Engine on the RV and found that my Key Switch wouldn't activate as it normally does when I turn the key and get the "buzzer" sound, gauges, etc. Even though my Battery Isolator Switch is on for the Chassis batteries as I normally would start it. I thought the Generator was independent from the Chassis Battery System so I didn't expect this problem. As I now know even though the Generator had its own 12V Battery in a box near it, it still is connected to the Chassis batteries in some way. I'm certain I interrupted the continuity of the Chassis Batteries back to the key Switch somehow but need some help identifying what I shouldn't have disconnected in the process of removing the Generator. Right now the generator Starter Cable positive side is not connected. Could that be the reason for the problem? I tried to remove the starter from the Generator and connect it to the positive side of the cable and also connected the ground to see if that would clear the problem by completing the circuit as it looked prior to my removing the Generator. Again my mistake was in thinking I could remove the unit and it wouldn't have any impact on the 12Volt Chassis Battery System needed to start the RV Engine. MY Bad, Yes. Any Help would be greatly appreciated.     



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