I'm sure most of you know what these little gadgets are - basically some sensors that are attached to the back of your car (at manufacturer or after market), and they feed information about how close you are to objects behind you (trees, other cars, shopping trolleys etc). The information is usually passed to you by way of a series of beeps which get louder/faster as you get closer to an object.
I had previously thought that these things were both a) expensive and b) kinda useless if you actually know how big your car is, and are capable of driving properly...but today I was in a Tesco Extra (Stockport) and noticed a 2 sensor wireless kit (including all fittings/transmitter/receiver) reduced from £60 to £13.50. The street that I have just moved to can be hell to park on late at night (almost *always* only a tiny spot left that I usually can't get in to), so I figured that for £13 quid I may as well give them a try.
Fitting took about an hour, and basically involved drilling 2x 20mm holes in my rear bumper for the recessed sensors (scariest part hah), running a few cables into my boot, and then splicing a couple of power cables from my reversing light "on" feed to the transmitter unit (which I have mounted in my boot). That was it really..aside from a few issues locating the correct cables to attach the transmitter to (damn multiplexed cars grrr) it was really simple to do Sadly the sensors are silver, and my car is black, so I will need to spray them at some point, but its not difficult to do...and actually the silver sensors don't look so bad on the black car.
Very impressed with the system (hence this post!), it really is very accurate..I did a few test parks with my father watching the back of the car, and each time I could get within half a foot of where I needed to be. When I got home tonight I found only a tiny space left, which I would usually give up on..but decided to give it a go. I found it so much easier to park in that space using the sensors..I found I could reverse much much closer to the car at the back (without having someone watch me in), so obviously that gave me more room to manouver.
Anyway point is that I have totally changed my mind..parking sensors really are a great invention, and I recommend them to almost any driver..makes your life much easier. FYI, the kit I bought was a "streetwise 'Easy2Fit' Wireless 2 sensor kit", and my car is a 2005 Peugeot 206.