tach - Harley Davidson Street Forum - Street 500 and 750
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post #1 of 10 Old 06-14-2015, 10:12 PM Thread Starter
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tach

does anyone know if a small auto parts car/truck tach will work on the street 750?

just curious, i'll likely go with the fp3 when I can afford it, I see where it shows rpm and a lot more.
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post #2 of 10 Old 06-15-2015, 12:56 PM
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There is a place that sells 2.5" and 1.9" tachs for motorcycles, dime city cycles use the blue green wire on the coil as a trigger signal- so I have been told is all you need to use, that is the front cylinder wire from the ecm to the coil.
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post #3 of 10 Old 06-15-2015, 01:59 PM Thread Starter
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Wow good info , thank you!


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post #4 of 10 Old 06-15-2015, 05:45 PM
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Hello, first excuse my poor English, I researched a bit what the partner and its information matches the ECM scheme, blue and green wire belongs to the impulses of the front cylinder.








I can only know if anyone has tested and if necessary to install the typical diode resistor in series with the input of the tachometer.






A greeting and forgive my ignorance.
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post #5 of 10 Old 06-15-2015, 07:07 PM
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I am not sure on your question I am weak concerning actual installation of the tach.
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post #6 of 10 Old 06-15-2015, 11:36 PM Thread Starter
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wow, great job finding that information!

looks like something I might could do.
kinda leary though of tapping into the bike wiring.
I sure don't want to mess up and do anything that might damage the bike or its ecm.

now I just gotta decide if I want to make that jump...lol

I do thank you for your time and effort.

by the way, your English is just fine !
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post #7 of 10 Old 06-15-2015, 11:41 PM Thread Starter
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Originally Posted by oandy View Post
I am not sure on your question I am weak concerning actual installation of the tach.
that's ok, me too!
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post #8 of 10 Old 10-10-2016, 05:07 AM
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I installed a tach today. I followed this YouTube video, which shows the schematic above for making the dual fire tach work on single fire bikes like the street. Not too hard to do if you can solder.

https://m.youtube.com/watch?v=ut16TqBUYik

Works great!
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post #9 of 10 Old 10-10-2016, 08:28 AM
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Originally Posted by motoguy82 View Post
I installed a tach today.
https://m.youtube.com/watch?v=ut16TqBUYik

Works great!
Did the tach fit in under the front cowling/fairing?

I hate autocorrect. I always end up posting some thong I didn't Nintendo.

2015 XG750 Street - Denim Black (Sold)
2010 Suzuki C50T
2007 Kawasaki KLXs (Sold in 2010)
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post #10 of 10 Old 10-11-2016, 08:30 PM
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For the most part. Doesn't stick out much more than the speedo.
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