- Location
- In the islands
I am trying to get the compass to work properly. Who know the variance number for Iowa. I need to rein in this thing which seem to have a mind of its own. TIA
Yucca-Man said:Iowa's variance is going to be 7.
COMPASS VARIATION ADJUSTMENT
Variance is the difference between magnetic north and geographic north. In some areas, the difference between magnetic and geographic north is great enough to cause the compass to give false readings. If this problem occurs, the compass variance must be set.
To set the compass variance:
(1) Using the Variance Settings map, find your geographic location and note the zone number (Fig. 1).
(2) Turn the ignition switch to the On position.
(3) Depress both the US/Metric, and the Comp/Temp buttons. Hold the buttons down until “VAR” appears in the display module. This takes about five seconds.
(4) Release both of the buttons. The zone number will appear in the display module.
(5) Press and release the US/Metric button to step through the zone numbers, until the zone number for your area appears in the display.
(6) Press the Comp/Temp button to enter this zone number into the compass unit memory.
(7) Confirm that the correct directions are now indicated.
RichP said:Isn't that compass supposed to be degaussed every so often, I remember reading about in the FSM and a discussion on it here a few years ago.