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  #1  
Old 10th December 2019
budoka budoka is offline
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Question 02 Sporty speedometer wiring

Hello all, and thank you in advance for your time!

My 02 sporty has no speedometer, and the wires are cut before the connector (i have no connector). I would like to put a small generic speedometer on it, but am curious as to the wiring.

According to the wiring diagram, it has a black wire to ground, and a red wire and white wire which go to the speedometer. Any idea what those red and white wires’ functions are?

Thanks!
-dan
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Old 10th December 2019
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the red is power from the speedo to the sensor and the white is the speed signal back to the speedo.
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Old 10th December 2019
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Here's the Sportsterpedia section on the Speedometer:
http://sportsterpedia.com/doku.php/t...03#instruments

And the VSS used to signal the Speedo:
http://sportsterpedia.com/doku.php/t...e_speed_sensor

I suspect you can still find speedos from that era - if you want to rewire from the harness you have...

You can retro-fit a front-wheel-driven speedo with a mechanical cable drive...

You can also fit a new Digital Speedo - They usually come with a sensor to be mounted near the front or rear wheel to pickup speed info...

I know GPS Speedos are available, but I don't know if they work well or poorly (especially in bad weather)...


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Old 12th December 2019
budoka budoka is offline
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Default Excellent info!

Thanks guys, as always you folks are a huge help. I really appreciate it!

I guessed the red was power to the sensor and white was the signal from it, but I didn’t want to take any chances though. Thanks for letting me know for sure.

I’ll be fitting a front wheel mechanical drive speedometer when I give this bike a makeover, but after looking at my options and costs, I guess I’ll just put on a bicycle style el cheapo for now. At least they’re programmable and accurate.

Thanks!
-dan
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Old 12th December 2019
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The 2002 stock axle is 3/4" - so the older wheel-type drive will fit the axle - but from 2000+, the wheel uses sealed bearings - the older wheels used Timken bearings...

So, you might have to use an aftermarket speedo-drive because the older (Timken compatible) drive had a built-in spacer to reach inside the oil seal and press against the Timken inner race...

There are a number of different HD versions (across different models besides Sportsters) and one of those 'might' be workable, but just make sure the drive ratio matches the speedo ratio...

For using with the sealed bearings, you'll want a speedo drive that is nearly flush with the bearing (just enough spacer to keep it from being rubbed against the brake rotor) - And, you may need to drill a hole in the rotor for the speedo drive rotating 'tang' to have a place to function...

Whichever speedo drive you choose, you'll have to get a properly sized spacer to place next to the speedo drive (one the axle) so that the wheel remains in the center...

Nothing that is insurmountable...

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Last edited by IXL2Relax; 12th December 2019 at 20:20..
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Glad I came across this thread as my 2000 Hugger came with no speedo as well. I tried looking for a stock set up and finally ordered one but it was for a Custom, the indicator light bar is very different so I sent it back. I still have all the wiring from the speed sensor to the indicator lights and I'm gonna go with a digital set up. Unfortunately for me the only one I've seen that comes in plug and play is no longer being made and once the places that carry them are out, which they all seem to be now, will no longer restock them.
How hard is it to install a digital speedo that is a universal fit, do I have to cut into my existing wiring harness and splice in the wiring from the new guage? Also will I still need to find a set of just indicator lights? I plan on remounting it to the front rocker box cover and the few remounts I've seen all have a spot for the lights...
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