Drilling the Bumper & Installing Sensors
This is the scary bit - time to drill holes in the unblemished plastic of your Punto's bumper!
The instructions (which are not that useful!) say that the sensors should be 50-68cm off the ground, and spaced 30-40cm apart. The thin strip of plastic above the back bump strip is 60cm off the ground, and the holes from the 4 screws holding the bumper on are about 31cm apart - ideal, huh?
Measure very carefully down from each hole and mark in the centre of the plastic strip. When you're feeling brave... fit the 21mm hole drill bit that came in the kit... and drill away slowly!
This plastic slants upwards, so I used the brackets to adjust it to align them more vertically. Plug the sensor into the hole, stand back, and admire your handy work.
Wash, rinse and repeat three times...