Hi Glenna, welcome to the forum and hopefully to the Heartland Family. There is a ton of information here.
If you are looking for a generator there are things to consider.
Do you want LP, gasoline or diesel power. I think the most common on most RV's is the LP. Some use gasoline, few use diesel.
Generators in RV's are pretty much built for an RV. You cannot just go to Lowes, pick up a genny and put it in the RV.
You have to be mindful of ventilation, exhaust and a transfer switch.
What about power consumption, what do you intend to power with the genny? They are not all created equal.
The wires hanging down in the compartment, do you know what they are for, or where they go to?
Just a couple of thoughts on my end.
Many people including myself carry portable generators.
Peace
Dave