Ok. Just brought home a 2007 GSA. Setting it up to work for me. Read the "100 questions" thread. Observations. 1. I've seen other GSAs with adjustable height seat bars. Mine has a single location f & r bar on its custom seat. Year issue or custom seat feature? 2. What is with the auxiliary light switch on the bars? I understand mid 07 went to the backside of the left control. Anybody else move this? More coming as I think of them. Thanks. 3. Factory BMW plug is CANBUS. What are the troubleshooting procedures, as mine is DOA.