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Just bought a new Carbon Dark and have a question, is it possible to fit the tach and speedo from a Special/Milano to the Carbon Dark (wiring harness the same, bracket mounting, etc.)?
My 2017 Stone is also speedo only. Read somewhere that our models are not wired for a tach so it would NOT be a plug and play. Hope that's wrong as I like the more balanced look of the two instruments. That said, after a few months I (mostly) stopped missing the tach.
I also have a Carbon Dark. 0009 / 1921.We know that the ECU knows what the RPMs are because it bases the gear indicator on RPM versus Speed. Why they couldn't provide the RPMs as one of the options on the digital odometer part of the speedo is baffling. I have thought about getting the bluetooth interface and synching to a smart phone with the GUZZI app installed to be able to monitor RPMs and other factors while riding and analyze when I get home.
Guzzi tachs get their signal from the same source as aftermarket. You need three wires, battery, ground, and coil signal. $2k for a tach install? Pete
If the current harness has these wires I would not have to replace the harness and save about 1k, if not maybe the dealer could add them. The dealer is currently checking with MG to determine what is necessary. Still the parts add up to about $800 (without the harness and labor), Guzzi stuff is not cheap.0 1 0 0 2D000209 PI CABLE HARNESS $513.70??0 1 0 0 2D000294 PI D105 DASHBOARD WITH RPM SCALE $713.000 1 0 0 2B003631 PI DOUBLE DASHBOARD UPPER COVER $10.500 2 0 0 AP8152117 PI HEX SOCRET SCREW M6X25* $5.000 2 0 0 2B003851 PI BUSH $5.000 1 0 0 2B003586 PI PLATE SUPPORT INSTRUMENT $24.800 6 0 0 2B003367 PI GROMMET $18.600 6 0 0 013763 PI Washer for plate holder (4,2x1 $12.000 6 0 0 270793 PI Self tapping screw (D3,85x16) $12.000 1 0 0 2B003711 PI DOUBLE DASHBOARD LOWER COVER $5.500 4 0 0 CM178609 PI THREAD FORMING SCREW $10.001 0 0 0 MISC0 LABOR $550.00??Subtotal $1,880.10
Tachometers for two cyclinder engine on flea-bay starting at $9.00=free shipping 🛵
Fwiw, I had an AutoMeter on my Jackal for years no problems. Only it was easy on the Jackal as a dedicated ign pulse wire was left untapped in the instrument bezel. Unless such a wire is in the V7 Stone harness you'd have to run your own from the primary side of the ignition coil.Also you might have to fabricate a mount.I can't for the life of me figure out why the III wouldn't use the exact same harness on all models though. I mean really the difference between a Stone and Special electrically is like, the Tach, that's it, right?I can't imagine what the factory saved leaving the Tach off?!? I wonder if it was just more of a marketing decision to further differentiate between Stone and Special to justify the price difference?
Looking at the III Stone wiring manual I don't see a Tach lead anywhere. The ECU has several 'unused' terminals as does the headlight block so I'll need to pull the Special diagram to see what's what. Wouldn't surprise me to see wires there but not identified on the paper. As to why they left it off the 'basic' V7 models I think it's both model differentiation AND cost savings. Even at Guzzi's lower volumes, saving a fist-full of Euros on what may be their highest volume model adds up. What does confuse me is why the wiring harness is different. What cost savings could there really be by leaving the tach connector off, especially if you consider the added cost of having to manufacture and stock two different parts for essentially the same job.
egschade,Just ordered all the pieces (tachometer, brackets, hosing, etc.) to fit an QEM tachometer on my Carbon Dark and trying to figure out how to connect it. One issue I am researching is to where to get the wiring connector for the tachometer. Any help would be appreciated,Bill
Bill - PM me your actual email address and I'll send you the .pdf wiring diagrams for the V7 III Special and Stone. It sure looks like the tach hooks into the can-bus somehow but it's not clear how that's done. Perhaps the tach is smart enough to pull the RPM data off the buss and all you have to to is tap into it (and the lighting leads from the speedo)? warning poetry
There was a thread over on guzzitech and Todd researched it ... was doable but stupid expensive. The speedo and tach are separate units, with different part numbers ... so you can order the tach and all the housing bits and pieces and everything to connect it. Sorry I don't remember the exact dollar amount, but it is in the "who would every pay that" level.
Found the thread and it seems to be well over 800 US "Todd's price"In another word, you are almost better off buying a special which already has a tach build in from the factory if that is a must for you.
May be on eBay of a parts bike?
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