Originally Posted by perfectstranger
Could also squeeze a grommet into that hole and make the port (when wire is running through it) pretty damned water tight. It helps immensely to have the round mounting plate with ball because it covers the whole backside mounting area on the aquabox.
Correct. I thought about just drilling a hole into the box itself. But making it near the mount with the ball plate covering in is a much better solution. Also, I didn't want to use the punch out as it would leave a bigger hole then I needed.
I'll take a couple pics tomorrow...