I found a marine fitting it is a three part plastic and rubber assembly.
A hole is drilled in the roof for the wires the proper size for them all bundled together.
The base is screwed to the roof over the hole.
A rubber piece that is tapered on the OD and is solid is drilled to just fit the wires.
You then slit the rubber disc from the outside to the hole.
Feed the wires through the cap and into the hole.
Between the cap and base slide the wires into the slot on the rubber disc until they are in the hole.
Align the cover over the rubber disc and place both onto/into the base and screw together. This compresses the rubber and seals the entry.
I will try to find/remember the name of the fitting.
JIM
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