I installed an after market stereo system (Alpine CDE-136BT) and I'm having a hard time finding a wiring diagram to make a cable harness that attaches the 8 pin DIN on the navigation system to the 4 RCA jacks on the back of the Alpine stereo. I'm sure you guys have put an after market stereo in your Q45 cars, how did you connect the navi system?
Thanks, Heather
