FYI - The fridge in my 98 eagle has an automatic ignitor. The Norcold units used in 98-99 have been problematic though with the ignitor boards. There is a company called Dinosaur Electronics that I believe makes replacement parts if that is your problem. As others have mentioned, it will use little to no propane, but unless you opt to run no lights the entire time, you will likely need a means to recharge your battery or add a second one.
1998 Jayco Eagle 302FK (Honda EU3000is)
2016 GMC Sierra Denali 3500HD 4x4 Duramax/Allison
2003 Honda Aquatrax F-12X Turbo