I searched but couldn't find the thread where this was posted previously so I thought I better give credit where due. I ordered and installed the SAM-1 vent fan and light upgrade kit from this site: FabulousOperatingProducts
Start to finish I spent about 2 hours following directions. Everything about this kit is exactly as advertised. I did not install the new exterior vent that was included because I hadn't brought a good ladder, but everything else went great. I suppose it remains to be seen if it was worth the $199 but we're happy so far.

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Jim in Memphis
Wife of 45 years is Brenda
Recently sold our 1997 24' Classic
2014 Ford F-350 6.7 Diesel Crew Cab