Drill is the cleanest.
Use a rubber gromet of the right size, and silicone it before putting it in.
Drill is the cleanest.i am putting a CB radio in my truck.. my plan is to put the antennas on the sides of the tool box.. the only problem is how am i going to run the whires into the cab..should i drill a hole in the floor and run them up thru their??if i was to do that how would i seal up the hole??any help would be great![]()