1994 Oldsmobile 88 Owner's Manual - Page 79

1. Locate your location on the zone Compass Variance: Variance is the difference between nagnetic north and geographic north. [n some areas the difference between :he two can be great enough to cause :alse compass readings. If this happens, Iollow these instructions to set the Jariance for your particular location: map. Note your zone number. 2. Hold in the Cal switch (bottom of the mirror housing) for five seconds until the lastzone entry number appearsin the display. To hold in the Cal switch, insert a paper clip into the small holeon the bottom of the mirror housing. 3. Repeatedly press the Cal switch until the number for the new zone entry is displayed. Once the desired zone number is displayed, stop pressing the Cal switch and the display will show compass direction within a few seconds. 77