How to drill a hole on the roof of a vehicle for the ICU Car Camera Posted on March 13, 2018March 13, 2018 by admin Drilling a hole on vehicle is not difficult or damaging to your vehicle if done right. If your vehicle has no factory hole for an XM Antenna, drill a hole using a Step Drill Bit. Drill a hole in a vehicle using a Step Drill Bit. This will drill a hole larger and larger in increments. Cover expose metal with touch up paint, nail polish, or model paint. Use the same color as vehicle paint if possible. Once the hole is ready for installation, insert the ICU Car Camera and secure with mounting hardware. Once the ICU Car Camera is secured with the mounting hardware, your vehicle will be weatherproof because of the rubber base. Step Drill Bits come in kits like this one, or you can buy them individually. They come in a variety of sizes and drill holes larger and larger in increments. Use cutting fluid while drilling to ease allow easier cutting.