The op had a light bar on the rig when I bought it. The wires from the lights pass through a hole he drill in the roof. When it rains I get a wading pool on the floor boards. He seal the hole with expanding foam. Is there a product that will let the wires pass through but also make it weather tight? I really don't want more foam, bed liner, or roofing tar type products. Any help would be welcomed.

RTV silicone comes to mind first. Sticks to anything, and can be clear so it sort of matches. Short of that find a rubber bushing that appears to be way to big for the hole, and force it in.

Ron