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Legendary Electronic Tacho

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Has anybody any experience of fitting a Legendary electronic tacho? I bought one and couldn't get any sense out of it (indicates very low rpm and doesn't respond to the calibration switch). I returned it and got a new one and it behaved just the same. The original was returned to the supplier who says it's OK so it appears I'm doing something wrong. If you have got one of these to work can you please provide a simple fit and set-up guide. (my Commando is -ve earth). Thanks

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I believe this is a rebadged Speedhut

 

You can get detailed instructions from here

 

https://www.speedhut.com/gauges/Tachometers/?catid=f9

 

Points is one pulse every 2 revs or 0.5 pulse per rev, most Electronic ignition is one pulse per rev ie wasted spark.

 


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