Where to connect hand held tachometer?

6 replies to this topic
  • Blue4Ever

Posted September 18, 2004 - 05:56 PM


Looking to find out where I would connect a hand held tachometer to monitor RPM's while adjusting fuel screw.

  • Fastest1

Posted September 18, 2004 - 06:57 PM


What year bike? Til 03 you just hook it to the spark plug lead, 03 and later you will have to figure out which wire going to the coil/cap is the trigger, not the ground

  • grayracer513

Posted September 18, 2004 - 08:15 PM


Simplest solution would be to get one that triggers inductively off of the secondary. Remember that there is a spark every time the engine goes over top, just like on a two-stroke, so set the tach up accordingly.

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  • Blue4Ever

Posted September 18, 2004 - 09:08 PM


Thanks to you & Grayracer for the response. I'am trying to dial in my new "05". There are two wires to the ign. coil, will it hurt if I use the trial & error method? Or will it just give me a false reading on the tach.

  • Hamish

Posted September 19, 2004 - 12:51 AM


I just fitted a Honda hourmeter that has a tacho function built in. It's inductive off the plug lead, so installs in a matter of seconds.It's accurate to 20 rpm.

  • Fastest1

Posted September 19, 2004 - 06:46 AM


No it shouldnt hurt as long as the tach is using an inductive lead. It will read double the rpms as grayracer stated. The trigger wire will probably be the one without a black stripe or is not solid black.

  • Blue4Ever

Posted September 20, 2004 - 07:55 PM


Thanks for the response! Unfortunatly my tach is a old school 4,6,8 cylinder auto tach. I will have to do the pin in alligator clip trick. Thanks again!!

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