I am wanting to buy a iPhone 4 FM transmitter for my wife for Christmas this year. Her vehicle is a 2007 Suzuki Grand Vitara and the main antenna is at the rear of the vehicle. Does that matter if the FM transmitter is up front plugged in to the cigarette lighter? Will it make the signal weaker or have static build up? I figure in the radio unit itself, there is some signal pick up but I just wanted to ask someone here first. Thanks for your help.