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  #31  
Old 24th November 2020
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Quote:
Originally Posted by IXL2Relax View Post
Your question sent me on a quest for that information to add to the Sportsterpedia:

http://sportsterpedia.com/doku.php/t...ter_connectors

For 1999-2003 Tachometer (67042-99):
Connector Housing P/N is: 72451-00
Socket Pins P/N is: ........ 72452-00


However - Are you sure the problem isn't just a matter of tightening up the pin in the housing? Most times, there is a locking mechanism (little tab) on the pin that keeps it tight in the housing when you push the connector onto the device (tach). The other thing that happens is that the pin (socket here, right) sometimes gets loose and needs a bit of a squeeze to reform it to tightly grip the pin that fits into it.

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Yea, I briefly attempted that last night but I was rather fed up with it at that time and I didn't want to jack something up without taking my time etc. I'm gonna revisit that and see if I can tune the connection and get it working. Trying to find a 72451-00 is near impossible so far.
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  #32  
Old 24th November 2020
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Replaced by 72081-99 ?
https://serviceinfo.harley-davidson..../document/1222
https://www.jerseyh-d.com/connector-tach-6-position
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  #33  
Old 28th November 2020
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UPDATE:

So its not the wiring harness side of the connection, it was infact the connector on the tach side of the connection. I'm thinking there is possibly a broken solder joint under the connector at the circuit board. I was able to manipulate and wiggle the connector a few times to make it function correctly but then after a few tries it stopped all together.

Grabbed my buddies tach off the FXD and threw it on my harness, absolutely no problems, went for a quick rip down the street and everything functioned as normal.
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  #34  
Old 28th November 2020
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So, no tach adapter required?
From post 26: "I decided to unplug the tach adapter and go back to the #3 pin on the speedo"
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  #35  
Old 29th November 2020
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Quote:
Originally Posted by murphdog View Post
So its not the wiring harness side of the connection, it was infact the connector on the tach side of the connection. I'm thinking there is possibly a broken solder joint under the connector at the circuit board. I was able to manipulate and wiggle the connector a few times to make it function correctly but then after a few tries it stopped all together.
Well - If you are not going to rip the tach apart to fix the problem, you might be able to fix it without tearing it apart (or, maybe not)...

I would only attempt this if you are not going to tear it apart...

You could put a hot soldering iron (with a very clean tip, so you don't get any solder on the pin) against Pin#3 on the tach connector. This will send heat down the pin to where it meets the circuit board and may reflow the solder between the pin & the board. Only hold it there long enough to heat the pin. Try a very short time - If that does not fix it, then try a little longer.

This could also be risky - It could melt the connector plastic and make the pin/connector wholly unusable.

This is why I said, only if you're not planning to open it up and fix the problem.

At least now you know WHERE the problem is located.

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Last edited by IXL2Relax; 29th November 2020 at 02:57..
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  #36  
Old 6th December 2020
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Quote:
Originally Posted by sportsterdoc View Post
So, no tach adapter required?
From post 26: "I decided to unplug the tach adapter and go back to the #3 pin on the speedo"
Correct, no tach adapter was needed. #3 pin functions correctly!
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  #37  
Old 6th December 2020
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Quote:
Originally Posted by IXL2Relax View Post
Well - If you are not going to rip the tach apart to fix the problem, you might be able to fix it without tearing it apart (or, maybe not)...

I would only attempt this if you are not going to tear it apart...

You could put a hot soldering iron (with a very clean tip, so you don't get any solder on the pin) against Pin#3 on the tach connector. This will send heat down the pin to where it meets the circuit board and may reflow the solder between the pin & the board. Only hold it there long enough to heat the pin. Try a very short time - If that does not fix it, then try a little longer.

This could also be risky - It could melt the connector plastic and make the pin/connector wholly unusable.

This is why I said, only if you're not planning to open it up and fix the problem.

At least now you know WHERE the problem is located.

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I actually had this idea, but didn't want to really want to commit to that yet. I'm in the process of just trying to find another old used tach for now.

Glad places like this exist to share info with guys like me searching the depths of the internet, looking for a single forum post from 10 years ago to try a nd figure out a solution LOL
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