Md, what model Journey?
I have the 34H and mounted the vacuum in the 2nd bay in the basement (from the front passenger side)and ran the hose up under the dinette seat and installed the vacuum receptacle in the side wall of the dinette base against the refrigerator. Power was already there in the basement, so no problem.
'07 Winnebago Journey 34H - CAT C7, Koni's, MCU's, SS Bell Crank, Safe-T-Plus
'07 HHR Toad, SMI AFO, Blue OX