Re: 3rd Party Reversing Aids. Advice needed.
My current car (BMW 3 series touring...I know it's not an Alfa, changing it for a 156 as soon as someone buys it) has them fitted from the factory and I must admit that I'd thought of them as a waste of time, until I owned this car!! It makes parking so much easier, though it could also make you lazy as you can be so confident when reversing. When mine changes to a solid tone I have about 5cm left to go!! If I reverse need long grass and it blows in the wind I can detect when it moves behind the car!! Very sensitive and very useful.