will 94 tach work on a 2006 dyna???
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Joined: Jun 2005
Posts: 54
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From: Pooler (Savannah), GA
RE: will 94 tach work on a 2006 dyna???
I don't have a definitive answer but my guess would be no. In 2004 they switched to a serial data bus while the earlier models were straight analog, I doubt they would "talk" to each other. Could it be made to work by hobbling in some new wires....maybe?
Grand HDF Member
Joined: Apr 2005
Posts: 4,022
Likes: 3
From: Hudson Valley- NY
RE: will 94 tach work on a 2006 dyna???
Gulfstream is right, begining in 2004 the whole connection for the tach changed. HD used to have a pink tach wire that picked up the signal off of the coil. It's been a topic of a lot of discussion here and other other forums, just try doing a search under tach installation and you'll see what I mean. I originally purchased an Arlen Ness tach, nice and compact and matched the color of the bike 
. After trying every which way from Sunday to install it and talking to at least 3 different dealership techies, I gave up and bought a HD factory tach which worked from the day I plugged it in.
Good Luck.
. After trying every which way from Sunday to install it and talking to at least 3 different dealership techies, I gave up and bought a HD factory tach which worked from the day I plugged it in.Good Luck.
Road Captain
Joined: Dec 2005
Posts: 591
Likes: 1
From: Land O'Lakes, FL
RE: will 94 tach work on a 2006 dyna???
You can get a suitable signal, however it isn't documented. The 3rd pin on SOME of the newer serial data bus bikes does have a tach signal. I tried this first on my Street Bob with no luck. The 3rd pin on the ECM DOES work though. I would presume this would work with non-HD tachs, but I did this with an HD mini-tach and it works great.
The following link is to a project site where I documented it. I rewired it later because I short-cutted the wire routing originally, but this should still help you figure out the tach signal part and help you decide if you want to give it a shot.
Mini-tach project
Kevin
The following link is to a project site where I documented it. I rewired it later because I short-cutted the wire routing originally, but this should still help you figure out the tach signal part and help you decide if you want to give it a shot.
Mini-tach project
Kevin
Road Captain
Joined: Dec 2005
Posts: 591
Likes: 1
From: Land O'Lakes, FL
RE: will 94 tach work on a 2006 dyna???
I meant to add: I don't know if this tach signal is the same as a '94 tach would be expecting. But it definitely gives you some tach options.
Be sure to post if you try this to let us know how it goes.
Kevin
Be sure to post if you try this to let us know how it goes.
Kevin
Road Captain
Joined: May 2006
Posts: 724
Likes: 0
From: florida
RE: will 94 tach work on a 2006 dyna???
scotch locks .. they should be outlawed . nothing but problems over time
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Road Captain
Joined: Dec 2005
Posts: 591
Likes: 1
From: Land O'Lakes, FL
RE: will 94 tach work on a 2006 dyna???
ORIGINAL: NEONNIGHT34609
scotch locks .. they should be outlawed . nothing but problems over time
scotch locks .. they should be outlawed . nothing but problems over time
Kevin
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