Do you have "solar on the side"? It would be a plug that is under the overhang on the drivers side.
On mine, that is what those wires were for. Haven't confirmed the location of the roof top solar yet, but suspect that those end in the wall where they want you to mount the controller.
2016 Jayco Eagle HT 29.5BHDS (ordered 12/30/15, delivered 3/8/16)
2015 F-350 crew cab, short bed, 6.7L PSD, Pullrite Superglide 3300 hitch