Hello, new to the group and can't get RV to start.

Hello, my name is Dave and I am new to rving. I love it so far but I have a lot to learn about my motorhome. I have a 1993 Fleetwood Pace Arrow with a Chevy 454.

I am at the end of a week of dry camping and can't get my rv to start, any advice I can get will be greatly appreciated.

I am not connected to power and have not been running the generator. A few days ago the lights starting getting dim so I started the engine and let it run for about 45 minutes and then the lights were fine. This happened several times over the last couple of days and I let the engine run for a while each time.

The last time it started was Friday morning. When I came back friday afternoon everything was dead and it would not start. No interior lights, no dash lights, no cell phone charger, nothing.

I tried to jumpstart it with no luck. I have two six volt batteries and one 12 volt battery that were brand new three weeks ago. I pulled the 12 volt battery and had it charged at a shop. Reinstalled and still nothing.

I checked the fuses under the fridge and in the battery control center under the hood and everything is fine. Maybe I am missing a fuse box somewhere? Seems like an ignition fuse is bad.

Any ideas? I'm humbly hoping I missed something stupid and easy...

Thanks in advance for the help,

Dave