5
MAN #650519:B
Using an electric speedometer with the GPS-50-2.
The speedometer signal input should be connected to either SPEED 1 or SPEED 2 depending on the speedometer
requirements. If you are unsure of which to use, start with SPEED 1 and then switch to SPEED 2 if it doesn’t work. You
can test the speedometer connection by entering the speedometer output setup described below. While you are at the
speed cal selection, the output will provide a 60mph signal for testing.
If you are going to be connecting a cruise control to the GPS-50-2, the CRUISE terminal provides an ECM style speed
output signal. The output rate for this terminal is the same as for the SPEED terminals. It is not uncommon for the raw
GPS speed data to vary by as much as 6 MPH when going under a large bridge or other structure. While this unit does
use additional sensors to monitor and remove this, it may be possible to feel the cruise change slightly even though your
speedometer will not show a change.
Speedometer output setup.
•
Hold the switch beside the GPS-50-2 display while turning the key on. The display will show the current revision
code while this is held.
•
Release the switch. The display will show “
-C-
”.
•
Press and release the switch until “
spd
” is displayed.
•
Press the switch and hold the switch until “
-
” is displayed.
•
Release the switch. The display will show the current speed pulse setting,
4
for 4000,
8
for 8000,
16
for 16000,
54
for 54400, or
128
for 128000. It will also drive the output with a 60mph (96 km/h) speed signal so you can verify
the reading on your speedometer.
•
Press and release the switch to change the setting.
•
Press and hold the switch until “
-
” is displayed to save the settings.
•
Turn the key off.
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www.dakotadigital.com
605-332-6513
GPS-50-2
GPS INTERFACE
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OPTIONAL
ANTENNA
Connect to main
chassis ground
+12V
CONSTANT BATTERY POWER
(fused 5 - 20 AMP max)
+12V
KEY ON POWER
(fused 5 - 20 AMP max)
AC speedometer output.
Standard speedometer output.
Cruise control speed output.
Connection for GPS
speed signal to other
electric speedometers.
setup/status switch
