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Does the new upgrade tachometer digital speedometer permenently marry to the bike after you install it? Or is it possible to install on another bike? I'm probably going to upgrade in a year to a street bob and would love it if I could take that and my Daymaker with.
Go to the Shop tab of the H-D website, where you can read details and fitting instructions. It comes with a cable so you can set the mileage, which is stored in the ECU. Suggests to me that we can swap speedos around whenever we like, with that cable and it's instructions. I don't believe the speedo is actually 'married' to a bike, it simply comes along for the ride!
The way I read the instructions when I installed mine last week was that the Digital Combo Speedo marries itself to your ECM after 31.1 miles (that's why the B odometer counts down after you first install). Then once it is married to your bike you can still go back to your stock one speedo however you cannot resell the Digital Combo unit because it's married to the bike. I could of course be completely wrong as I have not switched back to my stock one yet but plan to just to see if it's possible.
Both the ECM and speedometer retain the odometer value. If the speedometer is replaced, it displays the odometer value stored in the ECM. The replacement speedometer will become locked to the ECM after 50 km (31.1 mi) have been accumulated. The trip B odometer displays the countdown mileage. Once the countdown reaches zero, the speedometer is locked to the ECM. If installed on another vehicle the odometer displays "VIN ERR". If the speedometer is removed from the vehicle before the countdown reaches zero, it has not been locked to the ECM. This mileage countdown allows for a road test to verify that speedometer replacement was the proper repair.
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