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The best way to check all the fuses is with a 12 volt test light, this will also allow you to check power to the clock. Most auto parts stores sell them for a few dollars, you simply probe each side of the fuse with it in place to see if you have power. HERE is a print of the 12 volt system ,it may be helpful as this is for your year and model. Using the test light will tell you if you have a bad fuse... IF you have anymore questions or concerns please feel free to contact me..
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RV Mechanic
10 Years RV experience... Cummins North West, Country Coach, Monaco Coach, Vendor certs.