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  10 

MAN #650519C 

Setup for Standalone Speed  
Using Speed 1 or Speed 2 wired to control box or gauge: 
 

 

When using a standalone speedometer. 

 

When a system control box is connected to BIM-01-2 series. 

 

When using an early model control box with no BIM support. 

 

The speedometer

’s signal input should be connected to either SPEED 1 or SPEED 2 depending on the 

speedometer requirements.  

SPEED 1 is a square wave signal for some OEM and aftermarket speedometers. 
SPEED 2 is a sine wave signal for most older speedometers. 

Dakota Digital speedometers, and dash systems, can use either output. 

CRUISE is a square wave output for most cruise controls.  

If you are unsure of which to use, start with SPEED 1 and then switch to SPEED 2 if 1 

doesn’t work. 

You can also test the speedometer connection by entering the Speedometer Output Setup / Test described on 
page 17.  

When the correct signal is obtained, most speedometers should read 60 mph. 

All three outputs generate the same speed frequency. 
 
Connecting to stand alone speedometer 
 

Dakota Digital ODY or ODYR/SLX speedometer = Gray VSS wire 

 
Connect either SPEED 1 or SPEED 2 to the speed input to the control box 
 

Early VFD3 or STR control box = SPEED terminal 
VFD3/VHX = SPD SND terminal 

 

HDX/RTX = 

“Speed Input” SIG terminal 

 
Normally no changes are required to the system control box. 
Default settings on all control boxes with a 

“I/O AUX” or “BIM I/O” input are: 

 

VFD3/VHX = 

SPEED

 

SENDER

 = 

NORMAL

 

 

HDX/RTX = 

SPEED

 > 

INPUT

 > 

SIGNAL

 = 

SENSOR

 

 
You may refer to the previous setup screens, to verify settings. 
However, 

do not

 change the setting to 

BUS

 or 

BIM

 

 
Speed Calibrations: 

 

The following speed calibrations can be done without the need to drive the car. 
 

ODY, ODYR/SLX, STR and early metal box VFD3 systems are defaulted to read 8,000 pulses per mile. 
VHX/HDX/RTX and black plastic cased VFD3 system are defaulted to 16,000 pulse per mile. 
 
Follow the Speedometer Output/Test setup on the next pages to generate a 60 MPH speed signal 
 

For 8,000 PPM devices set the output to 

 (*default) 

 

For 16,000 PPM devices, set the output to 



 
To eliminate the “

PLEASE SET SPEED

” messages, the speed calibration can usually be done with the adjust mode 

without even driving the car. 
When the GPS-50-2 is sending out the correct test signal, the speedometer should be reading 60 MPH (96 
km/h) or be adjusted to 60 MPH (96 km/h). 
 

Summary of Contents for GPS-50-2

Page 1: ... 2 Page 8 Setup Clock Setup HDX or RTX without a BIM 01 2 Page 9 Setup Standalone speed output only Page 10 Setup Calibration setups for standalone speed only Page 11 Cruise Operation Page 13 Setup GPS 50 2 Menu Options Page 14 Troubleshooting Quick tips Page 18 Service Warranty Page 20 IMPORTANT NOTE When using to operate a cruise control see the special mounting requirements on the bottom of pag...

Page 2: ...ntrol operation Cruise speed output can operate some OEM cruise modules the CRS 3000 cruise module and most aftermarket cruise modules The GPS speed signal can be momentarily incorrect due to interference from overpasses tunnels and nearby structures To avoid this problem the system stabilizes the speedometer reading by constantly comparing it with an internal acceleration sensor When the key is o...

Page 3: ...3 MAN 650519C Installation Wiring Overview ...

Page 4: ...4 MAN 650519C Installation Wiring using BIM cable Using the BIM cable will be the only way for the VFD VHX HDX RTX dash systems to read Compass Altimeter World Clock and optional outside air temp ...

Page 5: ...speed output options to select from All Dakota Digital gauges can use either SPEED 1 or SPEED 2 Other brands of speedometer may only read one of the two outputs Those brands that normally ship a three wire speed sensor will use SPEED 1 Those brands the normally ship a two wire speed sensor will use SPEED 2 OEM speedometers tend to use SPEED 1 OEM GM cruise controls will like the CRUISE signal when...

Page 6: ...irst the module needs time to acquire and track the satellites This typically won t work inside a steel building so have the vehicle outside to speed up the process There is a dot in the upper right of the display that will be on steady or on and flashing any time the key is on The dot in the top center of the display will be on steady once it has gotten a GPS satellite fix The unit won t operate ...

Page 7: ...urs The time from the GPS is setup through the VFD3 BIM setup Hold SW1 I for the VFD3 control box and turn key on o Speed will display and the message display will show SETUP Release SW1 Speed will display and the message center will display SPEED Tap SW1 I until and BIM are displayed Press and hold SW1 I until and SCAN X is displayed o X the number channels Default is 3 Clock Compass Altimeter Re...

Page 8: ... when the LCD displays FOUND XX and XX ERRORS o The XX represent the number of channels found or that have conflicts o With only the GPS 50 2 the LCD should display FOUND 03 and 00 ERRORS o If the display reads FOUND 00 check connections and constant power to GPS 50 2 Tap SW1 I to display BUS SCAN Tap SW1 I once to display BUS SETUP Press and hold SW1 I until the message changes o If only using th...

Page 9: ...d then hold the switch Release when instructed This will make the final save and exit the setup menu returning to normal operation You may turn the key off Setting the clock hours The GPS based time is automatically used by the HDX RTX system and can be adjusted through the HDX RTX programming switches You can change the hours time zone by following the steps below NOTE Adjusting the minutes will ...

Page 10: ...meter Gray VSS wire Connect either SPEED 1 or SPEED 2 to the speed input to the control box Early VFD3 or STR control box SPEED terminal VFD3 VHX SPD SND terminal HDX RTX Speed Input SIG terminal Normally no changes are required to the system control box Default settings on all control boxes with a I O AUX or BIM I O input are VFD3 VHX SPEED SENDER NORMAL HDX RTX SPEED INPUT SIGNAL SENSOR You may ...

Page 11: ...00 o 128 000 Tap the switch on the GPS 50 2 to change the speed output o Expected default speed inputs to display 60 MPH 96 km h Current plastic case control boxes 16 000 PPM Aluminum VFD3 and STR boxes 8 000 PPM Once the GPS 50 2 is set to the correct pulse rate follow the speed setup in the appropriate system manual s for the Adjust Mode or use the app for HDX and RTX o Sometimes the speed may n...

Page 12: ...t to the correct pulse rate follow the speed setup in the appropriate speedometer manual for the Adjust Mode o Sometimes the speed may not read 60 MPH 96 km h adjust so they match o Sometimes the speed may match but it is okay to offset the speed by 1 MPH or km h The corrected speed must be maintained for at least a full 10 seconds After a full 10 seconds press and hold the GPS switch to save the ...

Page 13: ...se of the optional Remote GPS antenna part number 600041 This can connect to the OPTIONAL ANTENNA connector on the GPS 50 2 and be used instead of the internal antenna The small external antenna can then be mounted on top of the dash to get a clear view of the satellites while the GPS 50 2 can remain hidden under the dash The GPS 50 2 CRUISE terminal provides an ECM style speed output signal for u...

Page 14: ...e same frequency GPS accelerometer override settings Lowest speed accelerometer override is allowed default setting should be used GPS accel default setting should be used Accel GPS default setting should be used Speed averaging update default setting should be used Reset module orientation relearn which direction is up and forward Signal to noise ratio readings for trouble shooting and diagnostic...

Page 15: ...ith the Altimeter and Tank pressure as they both use channel 16 Changing the GPS 50 2 Altimeter ID to 9 or 10 will avoid any conflicts with the five pressure channels in the BIM 19 2 Setup GPS clock ID number and time format Hold the switch on the GPS 50 2 module while turning the key on The display will show the current revision code as long the switch is held Release the switch The display will ...

Page 16: ...the switch The GPS 50 2 display will show Tap the switch until is displayed Press and hold the switch until is displayed Release the switch The GPS 50 2 display will show or and then blank out Setup Altimeter ID number Hold the switch beside the GPS 50 2 display while turning the key on The display will show the current revision code as long the switch is held Release the switch The display will s...

Page 17: ...isplayed Release the switch The GPS 50 2 display will show Press and hold the switch until is displayed Release the switch The GPS 50 2 display will show Tap the switch until is displayed Press and hold the switch until is displayed Release the switch The GPS 50 2 display will show or and then blank out Calibration Override settings The section list as is to alter the accelerometer settings These ...

Page 18: ... ground wire to GROUND Connect accessory or ignition power from fuse panel to ACC PWR Verify key on power is above 10 volts GPS has steady dot in left corner using BIM cable BIM cable loose or damaged Reseat BIM cable check for continuity on green wire remove other BIM units GPS is flashing or ID conflict with another BIM Change ID on GPS or BIM to avoid conflict of the listed conflict GPS is flas...

Page 19: ... output not matching CRS control gain set high Slack in linkage or unsecure cable from cruise module GPS not getting clear signal Speed wire picking up interference Change speed output of GPs 50 2 to match cruise and or adjust CRS pulses to match GPS 50 2 Set gain to lowest setting Follow the CRS 3000 manual for cable slack and mounting procedures Relocate GPS 50 2 away from metal that may interfe...

Page 20: ...R of this product that should it under normal use and condition be proven defective in material or workmanship for the lifetime of the original vehicle it was installed in such defect s will be repaired or replaced at Dakota Digital s option This warranty does not cover nor extend to damage to the vehicle s systems and does not cover diagnosis removal or reinstallation of the product This Warranty...

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