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Old 06-23-2022, 09:24 AM   #1
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Partial loss of 12v power

2008 Itasca Merdian. After a 4 hour trip, there is no power to the entry steps, step cover, outside mirrors. All other 12v components work.
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Old 06-23-2022, 12:35 PM   #2
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There are a few points that might lead to a fix.
One is that the power for both items comes from the chassis side of things. There often are two groups of fuses/breakers, one for RV things which Winnebago adds but another for the normal truck items like horn, lights, turn singals, etc. So when looking for a power problem for the mirrows and step, first locate the box with auto type things? That would often be under what passes for a hood on many RV. There may be one or more that have failed.

Both models of your Meridian seem to have the same wiring but I took this snip from the 39Z model as typical.

Click this snip to get a better view and idea of what I am thinking may need checked.
If not finding a fuse, you can also test for power and ground on the various parts of the step system. I go to the one I can get to easiest first!

But is your step kill switch set right?
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Old 06-23-2022, 04:25 PM   #3
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Page 4 of the Front End Wiring Installation shows 12V breakers for the steps and the mirrors. You should find these in the left frontmost compartment. I remember popping the step/step cover breaker once when the driver and passenger both tried to operate the step cover--in opposite directions at the same time!
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Old 06-23-2022, 05:30 PM   #4
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These might help speed up the look?

Two for the steps and while there might as well check the mirror breaker?

Goodluck on the bug hunt!
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