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Dakota Digital Aftermarket Speedometer/Tachometer Interface For Harley J1850 Motorcycles
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Dakota Digital Aftermarket Speedometer/Tachometer Interface For Harley J1850 Motorcycles

The Speedo/Tacho interface from Dakota Digital allows you to interface Dakota Digital and most aftermarket speedometers and tachometers with the databus signal created from the stock Harley-Davidson ECU, with the exception of some Softail and Dyna models.

This device connects to the bike’s data port and outputs traditional analog signals for a gauge of your choice. Outputs provided for accessory power and ground, tachometer signal, and speedometer signal.

In addition to wired outputs, the Speedometer/Tachometer Module contains a digital readout which allows for both reading back and clearing diagnostic trouble codes, similar to a scan tool!


Fitment Notes & Exceptions

  • The STM-100 will only create a 8,000ppm signal - please validate that your aftermarket speedometer is user adjustable before ordering
  • Will not fit 2011+ Softail models and 2012+ Dyna models
This Product Fits:
Harley Davidson
Cross Bones FLSTSB 2008, 2009, 2010, 2011
Dyna Fat Bob CVO/SE FXDFSE 2009, 2010
Dyna Low Rider FXDL/I 20042009
Dyna Super Glide FXD/I 20042010
Dyna Super Glide Sport FXDX 2004, 2005
Dyna Wide Glide FXDWG/I 20042010
Electra Glide Classic FLHTC/I 20042013
Electra Glide CVO/SE FLHTCSE 2004
Electra Glide CVO/SE FLHTCSE2 2005
Electra Glide Standard FLHT/I 20042009
Electra Glide Ultra Classic FLHTCU/I 20042014
Electra Glide Ultra Limited CVO/SE FLHTKSE 2014
Electra Glide Ultra Limited FLHTK 2010, 2011, 2012, 2013, 2014
Fat Bob FXDF 2008, 2009, 2010
Fat Boy CVO/SE FLSTFSE2 2006
Fat Boy FLSTF/I 20042011
Fat Boy Lo FLSTFB 2009, 2010, 2011
FLSTSE2 CVO/SE Softail Convertible 2011
FLSTSE CVO/SE Softail Convertible 2010
FXDSE 2007
FXDSE2 2008
Heritage Softail Classic FLSTC/I 20042011
Heritage Softail FLST/I 2006
Night Rod Special VRSCDX 20072014
Night Rod VRSCD 2006, 2007, 2008
Night Train FXSTB/I 20042009
Road Glide Custom FLTRX 2010, 2011, 2012, 2013
Road Glide CVO/SE FLTRSE3 2009
Road Glide CVO/SE FLTRSEI 2009
Road Glide CVO/SE FLTRXSE 2012, 2013
Road Glide FLTR/I 20042009
Road Glide Ultra CVO/SE FLTRUSE 2011
Road Glide Ultra FLTRU 2011, 2012, 2013
Road King Classic FLHRC/I 20042013
Road King Custom FLHRS/I 20042012
Road King CVO/SE FLHRSE3 2007
Road King CVO/SE FLHRSE4 2008
Road King CVO/SE FLHRSE5 2013
Road King CVO/SE FLHRSE6 2014
Road King FLHR/I 20042014
Rocker C FXCWC 2007, 2008, 2009, 2010, 2011
Rocker FXCW 2008, 2009, 2010, 2011
Softail Blackline FXS 2011
Softail Custom FXSTC/I 2007, 2008, 2009, 2010
Softail Custom/Nostalgia/Special/Deluxe FLSTN/I 20052011
Softail Deuce CVO/SE FXSTDSE2 2004
Softail Deuce FXSTD/I 2004, 2005, 2006, 2007
Softail Springer Classic FLSTSC/I 2005, 2006, 2007
Softail Springer CVO/SE FXSTSSE 2007
Softail Springer CVO/SE FXSTSSE2 2008
Softail Springer CVO/SE FXSTSSE3 2009
Softail Standard FXST/I 20042011
Sportster Custom XL1200C 20042014
Sportster Custom XL883C 20042009
Sportster Forty-Eight XL1200X 2010, 2011, 2012, 2013, 2014
Sportster Iron XL883N 20092014
Sportster Low/SuperLow XL883L 20052014
Sportster Low XL1200L 20042011
Sportster Nightster XL1200N 20072012
Sportster Roadster XL1200R 2004, 2005, 2006, 2007, 2008
Sportster Roadster XL883R 20042012
Sportster Seventy-Two XL1200V 2012, 2013, 2014
Sportster SuperLow XL1200T 2014
Sportster XL883 20042009
Springer Softail FXSTS/I 2004, 2005, 2006
Street Bob FXDB/I 2006, 2007, 2008, 2009, 2010
Street Glide CVO/SE FLHXSE 2010
Street Glide CVO/SE FLHXSE2 2011
Street Glide CVO/SE FLHXSE3 2012
Street Glide FLHX/I 20062014
Street Glide Special FLHXS 2014
Street Glide Trike FLHXXX 2010, 2011
Street Rod VRSCR 2006, 2007
Super Glide Custom FXDC/I 20052010
Tri Glide Ultra Classic FLHTCUTG 20092014
Ultra Classic Electra Glide CVO/SE FLHTCUSE 2006
Ultra Classic Electra Glide CVO/SE FLHTCUSE2 2007
Ultra Classic Electra Glide CVO/SE FLHTCUSE3 2008
Ultra Classic Electra Glide CVO/SE FLHTCUSE4 2009
Ultra Classic Electra Glide CVO/SE FLHTCUSE5 2010
Ultra Classic Electra Glide CVO/SE FLHTCUSE6 2011
Ultra Classic Electra Glide CVO/SE FLHTCUSE7 2012
Ultra Classic Electra Glide CVO/SE FLHTCUSE8 2013
V-Rod Muscle VRSCF 20092014
V-Rod VRSCA 2004, 2005, 2006
V-Rod VRSCAW 2007, 2008, 2009, 2010
V-Rod VRSCB 2004, 2005
V-Rod VRSCX 2007
Product Style RevZilla Item # Manufacturer Product # Availability
Dakota Digital Aftermarket Speedometer/Tachometer Interface For Harley J1850 Motorcycles 939188 STM-100 In Stock: Ships next business day


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Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.


If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

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Have a functionality, fit, or otherwise product-specific question about the Dakota Digital Aftermarket Speedometer/Tachometer Interface For Harley J1850 Motorcycles? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Dakota Digital Aftermarket Speedometer/Tachometer Interface For Harley J1850 Motorcycles
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