Combination Digital Speedometer/Analog Tachometer
Road Master
Joined: Apr 2009
Posts: 1,205
Likes: 3
From: Mebane, NC
I was wanting to purchase this for my 2007 (plan to do so even though), couldnt figure out why my softail wasnt listed as an application, it still plugs in, just has the added feature of fuel/mileage remaining...........we will see I guess. Dealer and I went through as much wiring as we could think of, and examined plugs.......SHOULD work.......(famous last words)
Tourer
Joined: Aug 2009
Posts: 376
Likes: 70
From: Cardiff, CA
If HD says it will work for your model year, go with that. Both power sources should be available.
If you use a SERT, SEST or TTS you will need to pull the ASSY fuse to flash the ECM. This digital circuitry will continue to call for a fuel level and will not leave the ECM alone so the J1860 VCI can attach to flash.
If you use a SERT, SEST or TTS you will need to pull the ASSY fuse to flash the ECM. This digital circuitry will continue to call for a fuel level and will not leave the ECM alone so the J1860 VCI can attach to flash.
Club Member
Joined: Aug 2007
Posts: 10,392
Likes: 2,058
From: N. Atlanta Burbs
No, the fuel pack is an add-on device like a PC. The above only comes into play when flashing the ECM programing.
Tourer
Joined: Sep 2009
Posts: 373
Likes: 0
From: Lincoln, ND
The dealer cant set the speedo. That has to be set at the time of order from the factory. I know this because i ordered an analog tach/speedo combo and didnt have it set at time of order...dealer cant do it. Id have to send it back to be reset. I decided to just keep track of milage on paper in my harley file 
Club Member
Joined: Aug 2007
Posts: 10,392
Likes: 2,058
From: N. Atlanta Burbs
The dealer cant set the speedo. That has to be set at the time of order from the factory. I know this because i ordered an analog tach/speedo combo and didnt have it set at time of order...dealer cant do it. Id have to send it back to be reset. I decided to just keep track of milage on paper in my harley file
Outstanding HDF Member
Joined: Oct 2007
Posts: 2,368
Likes: 14
From: Yokohama
If HD says it will work for your model year, go with that. Both power sources should be available.
If you use a SERT, SEST or TTS you will need to pull the ASSY fuse to flash the ECM. This digital circuitry will continue to call for a fuel level and will not leave the ECM alone so the J1860 VCI can attach to flash.
If you use a SERT, SEST or TTS you will need to pull the ASSY fuse to flash the ECM. This digital circuitry will continue to call for a fuel level and will not leave the ECM alone so the J1860 VCI can attach to flash.
I am using a TTS. What is the ASSY fuse, is it the main fuse? And why do I need to pull it? Seems like the bike and speedo are running fine. Thanks for any clarification.
Club Member
Joined: Aug 2007
Posts: 10,392
Likes: 2,058
From: N. Atlanta Burbs
If you don't release the speedo from the ECM when you try to flash you will get ERROR.50; UNABLE TO CONTROL J1850 BUS.
You will be able to do data runs or check for codes but you will not be able to flash. It will stop at 15% with the above error.
Same goes for any aftermarket digital gauge on a HD. They must be disconnected or power removed before they will release the ECM.
Any of this only comes into play when you are using your TTS or SEST tuner.
-wiz
Outstanding HDF Member
Joined: Oct 2007
Posts: 2,368
Likes: 14
From: Yokohama
This new speedo has the reserve fuel mileage measurement data field. It continues to ask the ECM for updates (in easy terms). The ASSY fuse is the accessory fuse located on the fuse block and named "ASSY". It is not the main fuse. It will be a 15 amp fuse and only one of the places the speedo gets power. If you pull the main fuse you will not be able to power the ECM for flashing.
If you don't release the speedo from the ECM when you try to flash you will get ERROR.50; UNABLE TO CONTROL J1850 BUS.
You will be able to do data runs or check for codes but you will not be able to flash. It will stop at 15% with the above error.
Same goes for any aftermarket digital gauge on a HD. They must be disconnected or power removed before they will release the ECM.
Any of this only comes into play when you are using your TTS or SEST tuner.
-wiz
If you don't release the speedo from the ECM when you try to flash you will get ERROR.50; UNABLE TO CONTROL J1850 BUS.
You will be able to do data runs or check for codes but you will not be able to flash. It will stop at 15% with the above error.
Same goes for any aftermarket digital gauge on a HD. They must be disconnected or power removed before they will release the ECM.
Any of this only comes into play when you are using your TTS or SEST tuner.
-wiz
By the way, do you have any idea if the backlighting can be dimmed on this unit?
Thanks again!
Club Member
Joined: Aug 2007
Posts: 10,392
Likes: 2,058
From: N. Atlanta Burbs
Thanks for the clarification. I checked the fuses and realized which fuse you meant and pulled it. The speedo light immediately went out. I left out the fuse for about a minute. Turned the ignition switch off, waited a little then turned it back then put the fuse back in. Is this sufficient to release the ECM?
By the way, do you have any idea if the backlighting can be dimmed on this unit?
Thanks again!
By the way, do you have any idea if the backlighting can be dimmed on this unit?
Thanks again!
The red hue is very bright isn't it. I do know a few guys that have put 3/4 moon or a full moon gray tint on the glass, what translucency or tint # was used I don't know. Since this is a new unit available this year I'm not sure if a voltage resistor insertion would be a good idea on the LED circuit. Maybe someone else could make a suggestion.
-wiz