Date: Fri, 25 May 2001 13:21:51 -0700 From: Marc.S.Edwards@QuestDiagnostics.com Subject: Brake duct sensors in Mel's car Mel; I believe that the black one on the left side (US drivers) side is for the OBC temp indicator. The sensor on the right side is to turn on and off the heated windshield washer fluid heaters. This may also do additional things that I don't know about. Thanks, Marc 1995 M3 LTW