Morning! OK, first I want to thank those of you sending me emails in detail on past questions. Hope I too will be able to help out soon. Second. My 85 735i, with 90,000 miles is great except it came with no owners manual, so I have no idea how to set the OBC...because I have no CODE. Can I get one...or SOL. Next, there is a switch on the RH side of the steering wheel, low on the under dash cover (knee level), factory switch. What does this or is this supposed to do? Any ideas? Thanks all Andy