1995 Cadillac Seville Owner's Manual - Page 134

Compass Variance Variance is the difference between magnetic north anageographic norm. In some areas thedifference between the two can be greatenough to cause false compass readings. If this happens,follow these instructionsto set thevariance for your particular location: 1. Determine your location on the zonemap. Note your zone number. 2. Hold in the Cal switch (bottom of the mirror housing) for five seconds until the current zone entry number appearsthe display. To hold in in the Cal switch, insert a paper clip into the small hole on the bottom of the mirror housing. 3. Repeatedly press the Cal switch until the number for the new zone entry is displaycd. Once thc dcsired zone number is displaycd, stop pressing thc Cal switch and the display w i l l show compass dircction within a fcw seconds. 2-63