Hi kellyboy,
Welcome to the Heartland family and to the Owners Forum. You'll find there are a lot of friendly people here who are willing to share their knowledge and experience.
On newer rigs, the stabilizers have a 12v automotive style circuit breaker on a bussbar of 5 or 6 breakers, usually located near the battery. They may be covered by a rubber boot. I'm assuming that your 2005 has a similar arrangement.
Most of the breakers have automatic reset. At least one of them has a manual reset - a tiny button on the end.
Do you know for sure that your battery is charged? Do your slides work? Interior 12V lighting? Refrigerator?
I've attached a picture of the bussbar circuit breakers, and a diagram of the electrical flow.