omega0684
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| posted on 3/8/08 at 11:37 AM |
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rev counter
when my car didn't have MS i had my rev counter signal hooked up to the negative side of my coil, but now i have MS with edis where do i draw my
rev counter signal from?
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COREdevelopments
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| posted on 3/8/08 at 11:55 AM |
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the edis unit has a rpm output, thats what my koso rev counter is hooked upto and is accurate enough.
hope this helps
rob
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clairetoo
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| posted on 3/8/08 at 01:17 PM |
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On my EDIS 6 and Megasquirt I have the same problem - I did wonder if I could use the output from the edis..........
Which of the two wires have you used - PIP or SAW ?
Its cuz I is blond , innit
Claire xx
Will weld for food......
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MkIndy7
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| posted on 3/8/08 at 02:27 PM |
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The EDIS module has its own output for a Guage, from what I remember its the Green wire...
But it depends what input your guage takes.
In Omega's case the guage was fed from the -ve side of the coil so its expecting a 12V pulse, I think the EDIS gives out a lower voltage ECU
type pulse.
Its explained a little here:
http://www.greengauges.com/help/faq8.asp
There is a special circuit for the MS so the MS gives a output for the Rev-counter... this either works straight off or needs an extra resistor from a
12v ignition supply (a pull up resistor? it might be called) ours needed this.
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