Yes, you do have to drill a whole to get the plug and wire through. Drill on the top... so the hole isn't visible later on if you sell the truck or remove the display.
The ticket was laser. The detector went nuts for a split second. No warning whatsoever. Instant on. That's why cops like laser and that's why no radar detector can really protect you from laser... I'm even skeptical about those laser scramblers. www.lidatek.com looks to be the most convincing one.