Floodcam Mounting Bracket

Hi I have recently bought a floodlight Cam but the cable grommet is on the bottom of the wall unit. My cable comes through my soffit and would fit better if you turn the wall mounting bracket upside down. It would obviously need to be fully sealed inc the hanging hole. This would be neater rather that running the cable all the way round and up into the unit. Just wondering if anyone had this issue and how you solved it? Thanks Ali