Rover Mini/Nippon Seiki Tacho reading double

General Megajolt Questions and Answers

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Rover Mini/Nippon Seiki Tacho reading double

Post by s-c1293 »

Hi. I'm just finishing off my third Megajolt install, this one is on a Supercharged 1969 Aussie Mini "K".
Now that it is going, I have noticed that the Nippon Seiki Tach is reading double what Megajolt is reading, I am using the tach out on the Megajolt to run this.
Does the Nippon Seiki use a fly back pulse to read RPM and need the Tach Adaptor to drive it?
The other two Megajolts I have fitted have both used Smiths Tachos and have worked fine.

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