What are these wires? 73 mid-bath Ambassador

[CaCraig]

I have a ‘71 Sovereign that I restored to original so I’m pretty familiar with early 70’s Airstreams.

I added to my obsession with a ‘73 Ambassador mid-bath. It’s very original down to the water heater, and belt driven water pump. I think it was parked since 1982.

In the pantry near the floor I found red and white wires that are pretty thick coming out of the wall. The manual doesn’t show these wires. I haven’t tested them for power yet. Anyone have them too?

Thanks.