Since each pin in the connector is for a different function, I'm sure you have more than one fuse. Check that all fuses test good. (Appearances can fool you) Then test each pin in the connector in the rear of the RV to see which ones are out. Don't forget to test the ground, if it's bad you will only get intermittent power through the various connections of the tow bar.
I'd think Newmar could provide you a wiring diagram.
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Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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