I have a Mass Air Flow sensor (hot wire version) that is for Mercedes S500 94-99. It is a Bosch 0.280.214.004 (new number 0986.280.121) It has a 5 pin circular connector. I need to know what the 5 connections go to so I can hook it up to a new fuel controller for the hobby racer. If anybody has a wiring diagram for S500 I would really appreciate letting me know what the hook up is. Thanks!