RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
7.
Pull the compass mini trip computer away from the overhead console far enough to access the wire harness connector then, disconnect the
connector from the compass mini trip computer.
8.
Separate the compass mini trip computer from the overhead console.
9.
Position the new compass mini trip computer (see Parts Required section) onto the overhead console.
10.
Connect the overhead console's wire harness connector to the compass mini trip computer.
11.
Install and tighten the three screws that secure the compass mini trip computer to the overhead console. Tighten the screws to 2.2 N.m (20 in. lbs.).
12.
Position the overhead console near the mounting location on the headliner in the vehicle.
13.
Connect the roof wire harness connector to the overhead console's wire harness connector.
14.
Engage the two mounting hooks on the rear of the overhead console housing in the mounting holes in the inner roof panel.
15.
Slide the overhead console forward far enough to align the two latches on the front of the housing with their receptacles in the inner roof panel.
16.
Push upward firmly and evenly on the front of the overhead console until each of the two latches are fully engaged in its receptacle in the inner
roof panel.
17.
Close the garage door opener storage bin door.
18.
Connect the battery negative cable(s) and reset the clock on the radio.
19.
Start the engine and momentarily depress and release the STEP button until the compass/temperature mode is displayed.
20.
Drive the vehicle on a level surface, away from large metal objects and power lines, through three or more complete circles that are from 9 - 27 m.
(30 - 90 ft.) in diameter. The compass mini trip computer may require the vehicle to be driven up to ten complete circles in both a clockwise and
counterclockwise direction to be properly calibrated. The vehicle speed must be maintained between 8 - 17 kph (5 - 11 mph). Once the compass
mini trip computer detects that a calibration is taking place, CAL will be displayed on the compass mini trip computer. When the calibration is
successfully completed, CAL will disappear from the display and normal compass mini trip computer operation will resume.
NOTE:
IF THE CAL MESSAGE REMAINS IN THE DISPLAY, THERE COULD BE EXCESSIVE MAGNETISM NEAR THE COMPASS. REPEAT
THE CALIBRATION IN A DIFFERENT LOCATION THAT IS FREE FROM MAGNETISM. IF THE CAL IS STILL DISPLAYED, PERFORM
THE COMPASS DEMAGNETIZING PROCEDURE. REFER TO THE 1999 RAM TRUCK SERVICE MANUAL (PUBLICATION
NO.81-370-9108), PAGES 8V-9 AND 8V-10 FOR INFORMATION REGARDING COMPASS DEMAGNETIZING.
21.
Once the calibration setting is complete, the compass may need to have its variance set. Compass variance, also known as magnetic declination, is
the difference in angle between true geographic north and magnetic north. In some locations, the difference between true geographic north and
magnetic north is great enough to give false readings on the compass mini trip computer. If this occurs, the compass mini trip computer must have
the variance set.
22.
To set the variance, ensure that the compass/temperature information is displayed on the compass mini trip computer. Then, momentarily depress
the U.S./Metric and the Step buttons simultaneously for at east 100 milliseconds but not more than one second. The compass mini trip computer
will enter into the variation adjustment mode and display the current variance zone along with VAR.
