Self fit rear parking/reversing sensors

[Daveyboy999]

Hello, I'm thinking about fitting reversing sensors, it seems an relative easy job.  Has anyone fitter a kit like this. 
4x Car Parking Sensors Detector Auto Rear Reverse Radar Audio Buzzer Alarm Kit | eBay
or
For Car Truck Reversing Kit Buzzer Alarm LED Display Silver 4 Parking Sensors UK | eBay

They are powered by taking the feed off the reverse light in rear light cluster. Can there be a problem with canbus. Also is drilling the rear bumper straight forward ie no metal reinforcement bars and has the bumper to be removed for the fitting of the sensors etc  Any advice from your experience or knowledge would be great 

[Daveyboy999]

I have read all the previous postings concerning parking/reversing sensors and not found what I'm looking for but I also found a number plate backing plate that has the sensors built in so it saves drilling the bumper.

Rear Car Number Plate 3 Sensors & Buzzer Reversing Reverse Parking Aid Sensor 5055325943803 | eBay

This may be the easier option what do you think 

[brodfather11]

The ones in the first post are the ones I've fitted, I think the second one in the first post with the display is the better. As far as I can see the first has only a buzzer.
A bit of a hassle fitting the sensors in the bumper and feeding the wire to the display but it is worth it.

No canbuss problems on a 2010 B9 and didn't remove bumper but hit a plastic reinforcement web and it caused a slight
 problem getting the sensor lined up so probably better removing the bumper

Never tried the ones in your second post , did toy with the wireless option but didnt go any further with it.