Thank you for posting that wiring color on your 97 E39 is different then the online schematic. My E39 has a production date of 3/98, and it has the same color sensor wires of Red / Blue Stripe & Brown wire as your BMW has to the two prong sensor connector.
My other sensor that I have plugged into air pump vacuum control valve by Peirburg has a
Red / White stripe & Green wire to the two prong sensor connector.
Last edited by josemedeiros007; 10-12-2012 at 06:18 PM.