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<p class="MsoNormal"><span style="color:black">Working on an MGA with a swapped in early 5 main MGB engine.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Trying to figure out how to set up an electric tach. With the car came an MGA tach with the internals swapped for an MGB tach but it doesn’t work. I purchased an MGB tach, and am trying to test it before I attempt
to swap the internals for the non working one.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Here is a picture of the tach; there are 2 white leads, which according to the wiring diagram, one goes to the coil and one to the ignition. Which is which? Or should I just try them? I know that it goes power
to tach to coil. We had the car running with the old tach but no movement of the needle before we found out that the gage was bad.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">Also, I am assuming the extra spade in the tach goes to power? At least the ground spade is obvious as its part of the case.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">And, while I’m at it, the MGB wiring diagram shows one lead to the gage voltage stabilizer. I’m thinking that can go directly to the fuse box to power?<o:p></o:p></span></p>
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