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

Nothing? Dead? Or cranks but will not fire?

Chassis wiring has fusible links coming off of starter motor. Slide under coach. Braille smaller wires connected along with large starter cable. Do any of them feel like rubber bands? If yes, they have blown meaning either a short or old age.

Triple check large battery cables for chassis especially ground cable where it attaches to engine or frame. Shine-up connections.

Without process of elimination underway possibilities are endless.