A phone prewire extension harness(center console to left side trunk, illustration 1) must be installed on the E46 (328i, 328iA) produced the first two weeks of 6/98 if the phone kit is being installed. The phone prewire option SA640 was not installed on vehicles produced during the first two weeks of 6/98. E46’s produced after the second week of 6/98 will have this phone prewire option SA640 installed at the factory.