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  #371  
Old 8th February 2016
sportsterdoc's Avatar
sportsterdoc sportsterdoc is offline
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Quote:
Originally Posted by rodtown View Post
I understand that once the tach has mated to a particular rides ECM, that it will show
"Vin Err" if installed elsewhere.

Does that mean that just the ODO will not work? Meaning, the tach and speedo will still function, as will the trip A and B, just no odometer reading?
My understanding that the ECM mating applies to a speedo or speedo/tach combo after 50 kilometers or 31.1 miles. This is to prevent odometer resets.
Are we talking tach install only?

This may help
http://www.harley-davidson.com/app-c...ts/-J05551.PDF
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  #372  
Old 8th February 2016
rodtown rodtown is offline
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Quote:
Originally Posted by sportsterdoc View Post
My understanding that the ECM mating applies to a speedo or speedo/tach combo after 50 kilometers or 31.1 miles. This is to prevent odometer resets.
Are we talking tach install only?
No, talking about the whole unit speedo/tach combo. I'm just curious after the mating, what sort of functions will operate if installed on another motorcycle.

Last edited by Folkie; 23rd January 2017 at 16:08.. Reason: Fixed quote
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  #373  
Old 8th February 2016
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Quote:
Originally Posted by rodtown View Post
I'm just curious after the mating, what sort of functions will operate if installed on another motorcycle.
Per the instructions link, if the odometer does not copy, the digital display will read NO CAL. If already mated to another bike, it will display VIN ERR.

No direct experience, but suspect that analog tach may be the only function.
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  #374  
Old 22nd January 2017
Drock128 Drock128 is offline
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Default Summary

I know this is old post, but I bought this Speedo/Tach, and I am going to install it on my 2004 883C (Upgraded to Hammer Perf. 1250 and TC88A).

I will divide my post in 3 parts:

1) Speedo/TACH an VIN
We know this Speedo/Tach mates with the ECM after 31 miles.
But what I am not sure of is if the different functions available to the Speedo/Tach are also related to VIN.
On the installation manual, it states that you are offered the possibility to select Tank Size if you install it on a Sportster, but with the same procedure, you can only select "Fuel Indication ON/OFF" if the Spedo is installed on a NON-Sportster model.
So, does the Speedo/Tach select which functionas are available based on VIN reported by ECM?, if not, how?

2) Fuel level on PRE-2007 models (not supported)
I am aware that my 2004 Sportster does not have the wire for speedo fuel level (nor the fuel lever sender unit). I have the sender unit, and I wil (sooner or later) install it in my fuel tank. Installing the wire to the speedometer should not be difficult at all, so that is not a problem per se...
My questions are:
i) If I don't install the cable prior to "powering up the unit" as stated on the installation manual, will I loose the ability to install the fuel gauge at later time?
ii) For those guys who installed it on a pre-2007 sportster with TC88A, do you have the option to turn on fuel display and select tank size? (even if it works incorrectly)

3) Gear Position on PRE-2008 models (not supported)
Same as with fuel level, is this option "not available" on pre-2008 Sportsters, or is it "available" but incorrect?



In summary,
Should I install the wire for fuel level sensor (with fake resistors) AND change my 2004-883C-International TC88A VIN Number to a 2008-1200C-Domestic VIN (closest 883C gear ratios) to get Fuel Level AND Gear ratios on a 2004 with TC88A?
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  #375  
Old 22nd January 2017
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I have none of the answers you are seeking.
Hopefully those with direct experience will respond.

How do you plan to install a fuel level sensor in a carbed tank?
Factory EFI units are combined with the pump and mount from the bottom.
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  #376  
Old 22nd January 2017
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Gear position ?
How does the transmission report that to the ECM/Speedo ?

Fuel level sensor ?
That is an optional kit for the EFI bikes so how do we mount this to a Carbed bike ?
Do all Touring bikes have the same fuel capacity hence the choice on the Sportster which has what 3 sizes ?
Pingle makes a kit to install an EFI tank on a carbed bike I believe

Change the VIN to correct the Speedo ? UH the TSM/TSSM probably reports the VIN to the TC88A or it is flashed from the old to new speedo.
Just adjust the VSS in the Daytona.
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  #377  
Old 23rd January 2017
Drock128 Drock128 is offline
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Default

Quote:
Originally Posted by sportsterdoc View Post
I have none of the answers you are seeking.
Hopefully those with direct experience will respond.

How do you plan to install a fuel level sensor in a carbed tank?
Factory EFI units are combined with the pump and mount from the bottom.
I will take it to a custom builder and have it inserted in the tank, probably combining some items like these 2 (fuel level sender unit mounted on plug):




Quote:
Originally Posted by rocketmangb View Post
Gear position ?
How does the transmission report that to the ECM/Speedo ?

Fuel level sensor ?
That is an optional kit for the EFI bikes so how do we mount this to a Carbed bike ?
Do all Touring bikes have the same fuel capacity hence the choice on the Sportster which has what 3 sizes ?
Pingle makes a kit to install an EFI tank on a carbed bike I believe

Change the VIN to correct the Speedo ? UH the TSM/TSSM probably reports the VIN to the TC88A or it is flashed from the old to new speedo.
Just adjust the VSS in the Daytona.
- I think Sportster Fuel Tank Sizes are: 2.1, 3.3 and 4.5 GAL. (2013 Service Manual Info)

- As far as I know, the VIN is stored inside ECM memory (TC88A in this case) and this is the VIN reported to the rest of the motorcycle. I would say TSM/TSSM/HFSM do not send VIN information on the data BUS.
With the Twin Tec USB interface it very easy to change the TC88A VIN reported to the system.
I think TSM/TSSM/HFSM and SPEEDO only reads VIN from ECM (TC88A). If you change the ECM without reprograming the correct VIN on it, the TSM/TSSM/HFSM/Speedo will "see" a different VIN from what they knew (previous VIN) and you will have to do the TSM/TSSM/HFSM/Speedo mating process again, so it relearns the new VIN.
This prevents someone from stealing your motorcycle by just changing your TSSM/HFSM with a regular TSM without waiting 30 minutes to finish the mating process.



In my case, changing the VIN would only be useful to allow the HD Spedo/Tach Combo Unit to enable Fuel Level and Gear Position calculations, assuming these options are enabled based on VIN, which allow to determine the model and year of the motorcycle (VIN position 5,6 and 10). The correct speed and odometer increment would in fact be adjusted with VSS in the TC88A.


I am sorry if my answers are too long, my english is not the best...
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  #378  
Old 23rd January 2017
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Folkie Folkie is online now
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Quote:
Originally Posted by rocketmangb View Post
Gеar pοsition ?
How does the transmission report that to the ECM/Speedo ?
It doesn't. The gеar pοsition is calculated by comparing the speed and rpm. That's why the gеar pοsition isn't displayed when you're not moving, or have the clutch disengaged.
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