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dangerruss's avatar
dangerruss
Explorer
Jul 05, 2017

No 12 VDC Cabin Power

I have 115VAC whether using ground power or the generator inside the motor home. I have checked the 115VAC to 12VDC converter and it is putting out the proper voltage. Batteries are staying charged. However, there is no 12VDC at the input of the power center.
I have checked the circuit breaker that is inside Onan generator and it is good. I noticed there is a relay inside the Onan. It has 12VDC on one side and no voltage on the other. So, this relay is open. Not sure if that's the problem or not...or what controls this relay but, without a wiring diagram I am kind of in a pickle. any ideas on what the problem could be?
Class C
  • enblethen's avatar
    enblethen
    Nomad
    Jul 05, 2017
    Look for a main fuse in the 12 volt power distribution center.
    Normally located behind metal plate next to the 120 volt breakers.
  • donn0128's avatar
    donn0128
    Explorer II
    Jul 05, 2017
    I have never heard of 12VDC going thru the generator. Do you have a battery cut off switch? In motor homes they call them salesman switches. That is most likely your problem.

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