When complete piece of mind is required for all your manoeuvres then one of our DPPK Parallel Parking Kits may be just what you require. These kits give you a Pro-Fit solution for both front and rear protection. You get 4 rear sensors working when you select reverse gear as normal and a second system is separately fitted dedicated for controling the front 4 sensors.
As standard the front sensors would be controlled by a dashboard mounted switch so you can turn them on and off as required. For a more automated solution if you have a modern CANBus wired car, you can upgrade the kit with an Interface Module to pick up a speed reading from your cars engine management system which will switch the front sensors on when your speed drops to around 6mph or less and off again when your speed increases.