Can't help you out on what pre-wiring consists of, bit a call to Winnie customer service should clear up the mystery.
Our King Dome has flat mounting tabs (ears?) that are fastened on the roof and the tabs have a vertical stud the dome bolts to. I suspect Winnie used sheet metal screws (or similar), but the fasteners are under Dicor so details escape me.
I mounted our Motosat on the roof with #12 stainless sheet metal screws and Dicor. Drill the holes, put a good dab of Dicor on each hole, position mounting plate (or whatever) over the hole(s), fasten the screws, then put another dab of Dicor on the screw heads.
The Dicor acts like a pretty good adhesive in addition to it being a good sealer. I think the screws are actually of secondary importance if there is a decent-size contact area for the Dicor.
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--John
2005 Horizon 40AD, 2005 Jeep Liberty CRD
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