When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
General Topics/Tech TipsDiscussion on break in periods, rider comfort, seats and pad suggestions. Tech tips as they become available will be posted here.
I think it really boils down to when HD connected the J1850 bus from the ECM, TSM/TSSM to the speedometer. IIRC it was 2006 when HD did a bunch of upgrades to the EFI and started programming the ECU, TSSM, and Speedo with the motorcycles vin number. I think this was the year they added J1850 to the Speedo. I know that the 2002 bikes did not have the vin number programmed. Also they did not have the J1850 bus going to the speedometer.
Okay, Thanks... You might well be correct? Mystery's like this bug the crap out of me and I appreciate you taking the time to reply. If what you say is true then presumably there are some 2006 & 2007's where this gear selector might function with said gauge? This adds weight to one of my other hypotheses, where I suspected a possible change done during production. Such changes are seldom known to the Average Joe and mistakenly get omitted from advertising literature. However more often than not installation instructions typical will make note of said changes; at least most of the time. There is where the mystery began for me and the reason why I submitted this post. The reality that I could find no reasonable explanation TSB or otherwise added to the mystery. In effect I've stumbled upon a peculiarity that's not well known and surprisingly slipped by a lot of proof readers. That? Or the memo never made it to the right people. Therefore my recommendation for others to examine theirs is valid? Could be a few fellas out there that'd be happy to learn of this oddity? It's rather amazing that this hasn't been brought to the attention of HD HQ, years ago. It's hard to imagine them missing a selling point and or failing to update their catalog all this time; had they known.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.
