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<p>It can be surprising how often you can be absolutely positive
about something, then find it wasn't as you expected. Nothing
like proving it.</p>
<p>There will be no harm swapping the pickup connections at the
tach, and it's worth trying as someone may have swapped them
internally for some reason.</p>
<p>Swapping the 12v and earth is a little more tricky. With
electronics reverse connection can sometimes blow the
semi-conductors, so it's a risk.</p>
<p>PaulH.<br>
</p>
<div class="moz-cite-prefix">On 09/08/2023 17:00, dave northrup
wrote:<br>
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<p class="MsoNormal">There is only 1 wire going to the coil.
That wire comes directly from the tach; I wired that myself as
well as the one wire going from the fusebox to the tach. So I
can just about guarantee that if I break that circuit the
engine won’t run. I have not yet tried “rapping” the tach.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was not certain of your previous answer –
can I do any harm by swapping the connections on the tach? Of
course, if its not working anyway . . . </p>
<br>
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