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MAN# 650098-B 

will be reduced.  This can be connected to a toggle switch to reduce the brightness at night.  To have 
the system at full brightness all of the time, leave the blue wire disconnected. 
 

TEMPERATURE SENSOR CONNECTION  

The sender must be Dakota Digital part SEN-15-1.

  Sending units from other manufacturers will cause incorrect 

readings.  The red wire on the sensor connects to the gray wire on the clock.  The black wire connects to the black wire or 
the case of the clock. 

The sensor will measure the temperature where its probe is located.  The sensor has a 12’ two wire cable to 

connect it to the gauge.  This cable can be shortened or additional wire can be added.  If additional wire is added, the 
added wire pair should be twisted and polarity of the wires should be carefully noted.  If the probe temperature is below -
39

°

 the display will show “—“.  If a sender is not connected properly, the display will show  

“ – “.  If the SND terminal is shorted to ground, the display will show “---”. 

For outside temperature sensing, the best location will be near the front headlight or another location at the front of 

the cycle where it will have good air flow while you are moving.  Do not mount the sensor too close to the engine or 
exhaust.  Doing so will cause the temperature reading to be much higher than the actual outside temperature.  The air 
temperature gauge will operate and read correctly between the temperature range of -39 - 255

°

 F (-39 - 125

°

C).  

 
COMPASS SENSOR CONNECTION  

The 3-pin connector from the sensor mates to the 3-pin connector from the display harness.  The sensor needs to 

be mounted with the two mounting tabs down and the cable coming out towards the rear of the cycle.  It should be 
mounted as flat as possible to make sure it can provide accurate readings.  Do not mount it next to any high current wires 
since they may cause incorrect readings. 

The compass will display one or two letters to indicate the current direction the sensor is pointed.  Large steel 

objects such as bridges can cause incorrect headings.  If the compass detects a disturbance it will freeze the current 
heading and highlight the display.  If the compass display is always highlighted, even in open areas, then the compass will 
need to be calibrated.  This is described in the “Setting the time and calibrating gauge” section.  

front

cable

 

Setting the time and calibrating gauge: 
 

The switch on the front of the lens is used for adjusting the time, setting up the temperature unit, setting up the 

compass, and making calibration changes.  At any time during the setup you can turn the key off and all of the changes 
you made will be saved.  The next time the key is turned on the display will light up normally. 

1.  To enter the set mode, hold the switch in while turning the key on.  The gauge will display the time and day of 

week with the minutes selected.  

2.  Press and release the switch to increment the minutes.  Press and hold the switch in to move to the hours. 
3.  While the hours are selected, press and release the switch to increment it.  Press and hold the switch to move to 

the time adjustment. 

4.  The display will now show a number from -7 to +7 and “cal”.  This is the current time adjustment setting.  Pressing 

and releasing the switch will increment the value.  A setting of zero does no adjustment, +2 adds two seconds per 
day (slows the clock down), -3 subtracts three seconds per day (speeds the clock up), and so forth.  When the 
desired adjustment setting is displayed, press and hold the switch.  The display will now change to the true north 
adjustment. 

5.  The display will show the current heading offset in degrees from -31 to +31 and “N cal”.  This is used to 

compensate for the difference between magnetic north and true north as well as for errors in the positioning of the 
compass sensor.  This offset will vary for different parts of the country.  Refer to the map on the following page for 
the recommended setting for your area.  Press and release the switch to change the offset, then press and hold 
the switch to save the setting. 

6.  The display will show the current temperature unit, either F or C.  Press and release the switch to change the 

setting, then press and hold the switch to move to the compass setup. 

7.  The final setup display will allow calibration of the compass to compensate for the magnetic field created by the 

cycle it is installed into.  The display will initially show “- -“.  To exit the setup routine, press and hold the switch with 
the dashes displayed.  Press and release the switch to change to the “CAL” selection.  To begin the compass 
calibration, press and hold the switch with “CAL” displayed.  (make sure the engine is running before starting the 
calibration). 

Summary of Contents for HLY-3171

Page 1: ...etween the different screens MOUNTING The gauge requires a round hole 2 1 16 in diameter It should be inserted into the opening from the front and the U clamp will be installed from the back Tighten the two nuts on the U clamp so that the gauge is secure Gauge depth to the back of the case is 1 1 2 Gauge depth including the mounting studs is 2 3 8 POWER Connect the red wire from the main harness t...

Page 2: ...brated This is described in the Setting the time and calibrating gauge section front cable Setting the time and calibrating gauge The switch on the front of the lens is used for adjusting the time setting up the temperature unit setting up the compass and making calibration changes At any time during the setup you can turn the key off and all of the changes you made will be saved The next time the...

Page 3: ... to negative ground red and white red to 12V power Clock is damaged Return clock for repair see instructions Clock will not turn off when The red wire has constant Connect the red to switched power the the key is off power white red to constant power Clock lights up but does Loose connection on white red Reconnect white red wire not read correctly power wire Poor ground connection Move ground to d...

Page 4: ...oduct in a good quality box along with plenty of packing material Ship the product by UPS or insured Parcel Post Be sure to include the RMA number on the package and include a complete description of the problem with RMA number your full name and address street address preferred and a telephone number where you can be reached during the day Any returns for warranty work must include a copy of the ...

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