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K100-forum.com » Technical, repair and troubleshooting » Wiring in a aftermarket digital tachometer

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MikeisonTV

MikeisonTV
Silver member
Silver member
Which of the following 3 wires would I want use to hook up and aftermarket tachometer on a k75? It is a speedo/tach combo so it will already be grounded.

Wiring in a aftermarket digital tachometer EC2A1A53-0A4E-4A9C-8FE2-290C65AED610


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Yep! I'm flipping through the air....that ain't good.
    

robmack

robmack
Life time member
Life time member
16 - speed signal from ign. coil ( black/blue ) gives rpm signal for tach.

22,23 are from speed sensor in the final drive but the signal is unusable for aftermarket speedos.  You'll need to use the supplied sensor that comes with your instrument.

21 is an OUTPUT, not an input to your instrument.


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Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

MikeisonTV

MikeisonTV
Silver member
Silver member
So 16 is my huckleberry....gracias I would have guessed 21. THANK YOU


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