onan wiring harness help

[mw88fc]

Good morning,

I have an 88 fc with an 8 kw onan.\ That has problems associated with the
wiring harness
that goes from the onan control board to the gauges inside the coach..


When the wiring harness is connected at the genny, the fault breaker trips
after 30 sec.
The real curious thing is that the genny keeps running with the breaker tripped.
( I am
going to test the breaker today, as I think this is a seperate issue?) Anyway,
another
symptom is the when the wiring harness is connected, the genny runs like it has
a big load
on.... the engine souds more loaded than it does with both airs running. I have
tested all
the fault sensor that are located on the generator. and they are working fine.


So, My questions are,,,

Does the genny have fault sensors other than the ones on the generator itself?
If so where are the located, and How do I troubleshoot them?
Are there any other things I can try or look for?


thanks

mark walk
88fc
310 560 4454