Removing Bull Bar & Lights/ Question....

I'm removining cause my lights are shaky and I've tightened them down so much one of the mount holes on the bull bar is cracked. It also blocks off my tow points which I don't like. When I originally put it on I poked a hole with a coat hanger in the rubber thing on the driver side front of the truck and fished the wires for the lights through there. Once its removed and the wires are gone do I need to worry about water getting in or anything?

 

Hit it from the engine side with some black RTV silicone. There won't be much water in that area typically unless you're fording through streams but that'll keep it sealed up.