I installed the Speedometer/Tach Combo gauge, part # 70900274 on my 2007 Sportster 1200C. Followed the instructions to the letter. When I turned on the ignition the first time it displayed the correct mileage and then displayed vin err. Now that won't go away. I reinstalled it with the same error message. I pulled the master fuse and when I plug it back in the correct mileage is displayed for a few seconds, and then it just displays vin err. According to the instructions it does this if the gauge was installed on another bike. This is a brand new gauage. Anyone have any ideas about what's going on?

 

Looks like maybe it was installed and returned? Or not programmed properly from the vendor. I would take it back to the dealer.

 

You didn't go to the same dealer that the other guy on here did that was having a problem changing colors :-). He had a problem took it back and got a second one?? Sounds to me like the gauge might've been a returned item?

 

The replacement speedometer will become locked to the ECM after 31.1 miles (50km) have been accumulated. The trip B odometer will display the countdown mileage. Once the countdown reaches zero, the speedometer is locked to the ECM. If installed on another vehicle the odometer will display "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.
• During the 31.1 miles (50 km) countdown period (before the speedometer is locked to the ECM), the security light will flash for up to 15 seconds when battery power is restored to the electrical system, while the new gauge synchronizes to the ECM.

 

Weird thing, I have an 05 road king, and speedo shorted out after washing it. I bought this same tach, but the model # ends with B instead of A. Same thing except for there is no KPH on MPH. I followed the install and data link to a T, and when I would ignition I'd get a NO CAL in the LCD, and then that would go away, and it was replaced with NO SPD. It would not transfer the odometer to the new odometer. I'm thinking that if your speedo stopped working, replacing it with this type of Speedo will not work due to the inability to transfer odometer reading of a broken speedo to the new speedometer. I can't find anyone with an answer to this.

I thought this might be an issue, as the old speedo was as if it wasn't there because IT WAS BROKEN (insert Sam Kinison Tirade). Our shop service guy in Folsom checked with the mechanic, and "it's okay, just follow the directions." Engine switch on, Data Link plugged in, no go! I had the old speedo out, and was tapping it and banging it slightly, and I saw LED partially show numbers, they would immediately dim if I stopped squeezing the old gauge. Thinking the ecm possibly sensed the old speedo after doing the Fonz bang and tap on the old speedo, which seemed to allow some juice into it, so I did the transfer procedure again, and something did change this time as it just went to NO CAL, without going to NO SPD.

I'm assuming NO SPD means it isn't sensing a speedo. Well It stopped that, and the NO CAL shows. There is a red light blinking, but then after a bit the red light goes solid and stays on. But still it did not do the conversion. The trouble shooting guide for this particular NO CAL says, normal function, but ads as long as "percentage and ok" show, which they don't. I went ahead and plugged the new speedo into the consul to see if something happened, and the new speedo lit up beautifully, but with NO CAL or something I forget. But no odometer transfer. I'm wondering if I should ride it and go through that 31 mph countdown the document spells out.

I'm going back down to get a speed sensor. Apparently, it could be that issue if the signal lights don't cancel, for one sign. With the bike just leaning on the stand, it doesn't cancel. Somebody said I had to at least lean it or move the steering for it to cancel, which I haven't done. So, I'll check for cancellation leaning and turning the bike. With all the forums out there only about 4 of these issues are on the net, and none of those who had the problem explained how they solved it. These speedo combo's don't work if your replacing a broken one. They should explain this, as there is no refund for them. They seem to only work if you are upgrading. I need to get the odometer reading back, as I'm selling. Any ideas?

 

Im sorry if i butcher this up ten ways to sunday, first time on a forum. Never had an issue with HD i couldnt figure out. Got an 06 883 roady that had a bad speedo as well. Traced and tested all cables, checked out fine. Replaced speed sensor first as a tip from buddy and bike had been sitting. Speedo still not workin. Purchased the digital speedo and performed same steps as you, and mine wont even light up or anything at accy on and engine switch to run. However if I turn the ign to on it says no cal and then no speed. Really got my brain twisted, saw somewhere that said if your og speedo is shot, you have to take to dealer for them to do a special flash from volatile mem of ecu to new speedo but shouldnt that already be performed through this process, i mean after all were hooking directly to the ecu?

 

You have to have HD add the mileage, it's the only way for my model, an 05. They took my new tach speedo back, even though no return, and I had to buy a stock one with mileage I had to swear on a stack of bibles that it was true. So, now I can buy the speedo tach model, lol! Not a chance!
It isn't the sensor, if you don't have the original speedo, and your old is broke, there is no way to transfer the odometer. Factory will add it for you, on your brand new OEM speedo, not the Newer cool ones. It's a damn shame really.

 

The guy has a 2007 and the speedo / tach he purchased comes with a cable used to connect it to the J1850 data connector. This is used to program the speedo with the bikes mileage

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