I bought a new Porsche Carrera 2S four years ago and we fitted a RAC Trackstar device. This work was carried out by a local RAC Franchise as we live in Guernsey. Subsequently we have had four years of problems with flat batteries. Despite using sophisticated chargers and buying new batteries, the problem did not go away. Eventually, the problem was traced to incorrect wiring of the tracker to the ignition causing a continual drain. The car is now running normally with no battery charging necessary. RAC Trackstar says it is a problem we should take up with the local tracker franchise, yet they say we should pursue the RAC for expenses, which have been considerable with breakdowns abroad and repatriation.