Interior and Upholstery Waterproofing interior

[MementoMori]

Has anyone completely waterproofed the inside of their mustang?

I have a 2005 4.0 convertible and im wanting to waterproof the inside so I don't have to freak out when my top is down and a freak storm rolls in. Is there a kit or does anyone know how to seal up the electrical.

Already drafting complete aluminum diamond plate for the floors with drain holes and accents.

Any ideas would be great. Thanks