We ordered one in our previous '02 Dutch Star. When we got the Magna the DW demanded that we get one for it. I didn't think we needed it with the Jenn Air 22 cf refer/freezer but I went ahead and bought one. Have yet to hook it up other than to test it. It came with the wrong 12 V power cord and I need to order the correct one. Guess that's one of the problems with an "open box" unit won't exchange it for the correct cord.
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '05 Odyssey