Punto (Mk2/2b) Fitting Reversing "Beeper" Sensors on a Punto Mk2

Right, let's get started. The first thing to do is remove the cluster that has the white reversing light in it (passenger side in UK models). This is done by unscrewing the two bolts in the boot highlighted in the image below. You need to use the grey plastic tool included in the spare wheel kit to do this.





Once you've done this, you need to find out which of the cables you just exposed are for the reversing light (the devices uses this as a power source so that it's only turned on when you're in reverse).


To do this, turn the ignition on, put the car in reverse and use a multimeter to look for a pair that give something close to 12V. Or look at the picture below and see that it's the black and white wires. Your choice.





While you're working around this area, keep an eye open for a good place to hide the device. I found that the flap pictured below works perfectly.





Now that you know what you're doing with the power, it's time to remove the bumper. It's held on by 10 screws (8x T30 torx screws, 2x 8mm bolt-style screws), at least a few of which are guaranteed to be set solid. The first 4 screws are T30 and line the top of the bumper:





It's a good idea to loosen the end screws but don't remove them - it makes the next stage easier.


Now you're going to need to jack up the back end of the car to get to the remaining 3 on each side. I found it was a lot easier once I'd taken the wheel off too, but this isn't 100% necessary. The first T30 screw is on the bracket below, with the head of the screw facing the floor:





The 8mm bolt-screw is right on the edge of the bumper, and the last T30 is about 8 inches down the same ridge. It's behind the lighter colour metal sheet in this photo:





Repeat on the other side, and your bumper is now free - almost! Remember those two you loosened but didn't remove earlier: if you'd took them out first, the whole thing would fall off and twist when you undid the last 3 on one side. Now instead you can support the bumper with something (e.g. you knees), unscrew those last two, and lift the bumper cleanly away. Don't forget to unclip the number plate light! It just twists out: