Two things you can do is go to an automotive supply store, and get the stuff(black sticky putty shit)they use to seal the plastic to the door under the door skin. The other thing is to buy a gromet to fit the hole, and re-run your wire through the gromet.I think this is the better thing to do because with wear and tear on the wire rubbing on the burr of the hole you drilled may cut through the insulation on the wire, and POOF!!!!