Zdrummerguy Posted July 16, 2014 Share Posted July 16, 2014 Hello, I'm totally confused on how I should get my RPM working through my MS3 main board in my 77' 280z. I'm using the Hall sensor off the negative side of the coil. However, I did the rookie mistake of installing both the section without points and the negative coil trigger at the same time. Even if I try the VR circuit only, I still don't get a tach signal. So I was wondering if anyone could tell me if I burned something out or destroyed the board, because no matter what I try it never produces a signal for the megasquirt main board. Thanks! Quote Link to comment Share on other sites More sharing options...
NewZed Posted July 16, 2014 Share Posted July 16, 2014 I'm using the Hall sensor off the negative side of the coil. I don't think this makes sense. It's either/or, I believe. Search for the word "coil" and you'll find some good stuff here: http://www.megamanual.com/ms2/V3trouble.htm Quote Link to comment Share on other sites More sharing options...
AkRev Posted July 17, 2014 Share Posted July 17, 2014 First thing first. 3.0 MS3 or 3.57 MS3? Is the board set up for hall or vr? Did you get the DIY wiring harness? What wire(s) did you put on the negative side of the coil? (if you do not have the DIY harness, what pin did the wire go to?) Quote Link to comment Share on other sites More sharing options...
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