38racing wrote:Back here again. I have 2 of the tiny tach knockoffs. Thought I was getting correct rpms but I have connected an alligator clip to the leads and clip it on plug wire instead of wrapping and holding with clothes peg. Recently I was suspicious of the readings and found they were not the same on both. Up to 1k different. And readings and my ear didn't agree. This was on pushmowers. I'm wondering if it's the clips. Also I have both units together in a container. Maybe they interfere with each other? Going to test them again by separating and wrapping. Watched a video where the guy inserted an inline tester to make his connection because plug had metal cover that he thought affected the pickup. Has anyone used the rotary 15344. Appears to be what my supplier is offering for about $100 cdn.
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