Have just fitted a Tyre Pressure Monitoring system took me less than a hour to set up and fit on my own drive. Easy to fit and no special tools required apart from the special hex wrench that is supplied in the kit. I did need a old flat screwdriver to get off one of my wheel trims but that was all. The system providers are called Tyre Pal web site www.tyrepal.co.uk who also give you a very detailed hand book and instruction guide to set up the system that monitors all four tyre's so you can have different pressures front and back. A monitor that just sits dashboard and is rechargeable with a long life battery so no drilling required. Not really used the van yet but am planning a trip to the show tomorrow at the NEC so will know more how it pan's out after then.