Dwell/Tachometer Question

Information and questions on GL1100 Goldwings (1980-1983)
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Dwell/Tachometer Question

Postby tunaboy » Fri Mar 29, 2013 1:16 pm

I found my dad's old dwell-tac. My question it's been over 40 years since I used this thing. I am thinking about using the tac for setting my pilot jets with it. It has a red and black lead with alligator clip on each. Where do I hook up the leads to get a signal to the unit?

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Re: Dwell/Tachometer Question

Postby thrasherg » Fri Mar 29, 2013 1:43 pm

On my old unit, the black lead was connected to ground (Usually clipped on the engine somewhere) and the red lead went to the points (The coil side of the points).. If you have an electronic ignition, I am not sure you can use the unit (There is no dwell angle to measure on a solid state pickup!!).


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Re: Dwell/Tachometer Question

Postby Johnyy Smoke » Fri Mar 29, 2013 6:40 pm

Dosent the red lead hook up to #1 spark plug? Regards, Johnyy

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Re: Dwell/Tachometer Question

Postby virgilmobile » Fri Mar 29, 2013 9:33 pm

No that's for a timing light.The old tach measures pulses from The points.You could tap it to the ignition coil input from the module.And yes,the dwell angle measurement is mute on the electronic ignition.
Note however,the old meters were designed to read pulses for a 6 or 8 cylinder engine so expect very low rpm. readings.

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