1996 Pontiac Bonneville Owner's Manual - Page 132

Electronic Compass (Option) The earth's magnetic field not always the same is direction as true north as we know it. So, you must enter a zone number tell the compass the difference to between magnetic and actual north. tells the This compass wherein the countryyou are driving I The compass shows the zone numberuse each time in you turn your key on. This is shown above. The number is turned off after a few seconds. I The compass remembers your zone, so you only have to change it if you drive toa.new zone onthe map. The compass adjusts only small amountfor each zone, so a you may not notice a difference if you drive from one zone to the next until you cross several zones. one, , . Some vehiclesare equipped with an electronic'compass. As with all compasses, this unit senses the earth's magnetic fieldto show the direction the is pointing. car ...,- '3 - ..._ I .'Y,'.. ' .-.; i;, . . ' ~ _.a: ' ... ' ,; ., , -. i. , . . , ' ...'i .:::,.;,I y ' j , , 4 B . ,I . ., - . : . .' ..:. ,_ I / I -;~i I- '. -.:.+-;L i . i . .: . x ' : : - - ~ -. i ... .. .