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Veglia-ITI Speedo Replacement Options

I ran across this adapter on Amazon, it seems to be what some folks were thinking of making. amazon.com/VTWINN-Motorcycle-Cable-Adapter/dp/B009F88UFA/ref=sr_1_120?s=automotive&ie=UTF8&qid=1418064050&sr=1-120&keywords=speedometer+1/8
Me, for $30-ish including postage, I'll be sticking to the cheap-and-ingenious fix by GreyK9. All hail the JB Weld.
 
I know this is an old thread but has anyone used or heard of using the Speedhut GPS speedometer? It looks like a nice unit, I have a 2004 Stone that has the dreaded ITI unit that has crapped out. :(
 
I decided to give the Autometer/Acewell sensor combo a try, since the speedo on my 2004 California Ev died. I am having a lot of trouble with noise, which is causing the needle to peg out and bounce around. I tried moving the ground to limit noise from that, but it did not fix the problem completely. The signal wire is routed along the frame on the right side, under the gas tank. Before I start looking for crazier sources of noise and error, I had better make sure that I assembled this correctly.

First of all, the Acewell website recommended the three-wire adapter, which plugs onto the sensor, and then must be wired to a power source, ground, and then wired up to the speedo. Was the adapter necessary?

The speedo has 12v input for the lamp, and another 12v input which is wired up with the Acewell sender unit and a 12v source which is turned on with the ignition, intervening 1 A fuse added per Autometer factory recommendation. For these, I used the existing wires that were already in place for the old speedo (2 yellow and 2 black wires that were originally for the lamps in the old speedo). I checked the voltage beforehand, and it was good in both.

The ground wire off the Acewell adapter unit was grounded to the frame, after I realized that having it on the battery negative terminal was a bad idea. This resulted in a more consistent error with the speedo reading than before - now the needle seems to be affected primarily by engine revs, even when the bike is not moving. At idle, there is nothing, but revving in neutral makes the needle go up to 80mph or more.

I did take the bike out for speedo calibration, which I performed 3 times, and the Acewell sensor unit is definitely sending signals to the speedo, as you can see the counter go up while moving.

Any ideas?
 
I was thinking that shielding might be needed. Any idea where to get such mesh?

I have been playing with it some more to try and isolate the problem. At this point, it seems that if the wheel is held stationary, I get no fluctuations, but if the bike is on the center stand or rolling, I get the problem. Will try and calibrate it again and see if that helps.
 
Toogrey, I had one on my 2003 Aluminum and it works pretty nice. Speedometer is very accurate. I also have a Dakota Digital 3016
that's never been installed on a bike. It replaces everything on your dash into one unit. That includes your indicator lights, turn signal indicator, tachometer, speedometer, 2 trip meters. Harpers sells these for $575 and that includes the mounting bracket. If you or anyone else is interested I'll sell you the Dakota Digital Speedometer for $200 plus shipping.
 
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