Ok, this is retarded. Car:"duh e30" is your first mistake. 318i correct? You're taking advice based on a 325.
What are you actually trying to do? Turn the service indicator lights off (little LED's in the middle of the cluster **green-green-green-green-yellow-red**)? Or are we talking about the pressure light (rectangular back lit) that is along the bottom of the cluster?
1986 E30 325e (killed)
1986 E30 325es (died)
1988 E30 325i (rotted)
1992 E34 525i (sold)
1992 E30 318i (cabrio, Dad's)
1989 E30 325i (Mom's)
1991 E30 318i (cabrio, summer car)
1991 E30 318is (Winter car)
1992 Euro M5 (driveway decoration)
1994 E36 325is (driveway junk)