OTA TV connections

On my 1993 Chateau,I have what looks to be the remnants of an older style crank up Windward antenna base on my roof which a PO has entirely covered with lap cement, and inside toward the front of the coach and also at the bottom of the bed I have a wall plate which has a coaxial connection, an on/off switch with light and what looks somewhat like a cigarette lighter plug. I also have a coaxial plug on the outside of the coach near the water and electrical connections. My question is, how are the tv signal wires normally run to these devices? I bought a new antenna and want to hook it up but not sure where to connect it into the system. Is anyone familiar with these old setups?