Hi there, this is my first post here and hopefuly wont be my last. I recently purchased a Sterling PRO multi-feature alarm for my 1988 BMW 518i and I have a few questions. I bought the alarm with the intentions of fitting it myself but after opening the box I found there was no wiring diagram for the alarm, I found the diagram for my BMW with no trouble but Im still stuck on finding the one for the alarm. I just want to know am I wasting my time looking for one online or is there somewhere I could find out? I dont really want to hire a specialist to fit it because A. Im a bit strapped for cash lately and B. I want to try and learn a bit more about the electrical side of my car. Any help would be greatly appreciated. Thanks