Step 3 - Now the front grill for the four headlights needs to be drilled. Don't attempt to drill each hole in one go, as its a beveled surface and easy to slip with a drill. I start out on each light with a 1mm drill, then go to 3mm, and finally widen each hole out with a five mm drill for an accurate fit.
Step 4 - We now need to drill out the six holes on the front rood light box for the flashing red/blue leds. To do this, take the chrome plated light box base, and using a pair of flush cutters, clip off the pre-molded "bulbs" in the piece. Now as per the front grill, pre-drill each hole with a 1mm drill to correctly position, and then widen each one to 3mm. When done, glue the section in place on the roof and allow to dry. When dry, drill down through each hole through the car roof with a 3mm drill.