omega0684
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| posted on 27/2/09 at 02:46 PM |
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rev counter wiring
how do you wire up the rev counter when using edis, does the edis give twice as many pulses to the rev counter as opposed to when not using edis?
hence does the rev counter read twice what the engine is actually revving at?
sorry, i have the caerbont automotive rev counter, just opened the back up and it has 6 little switches on a chip 1,2,3 & 5 are switched down and
4 & 6 are switched up.
[Edited on 27/2/09 by omega0684]
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Moorron
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| posted on 27/2/09 at 02:54 PM |
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i know nothing of EDIS but all rev counters have the ability to select how many pulses per crank rev are input into them. I think they call it lost
spark.
Mine is digital so i have to do it via a menu switch, but alot of the older ones have dip switches on the back of them to select all the bits.
Sorry about my spelling, im an engineer and only work in numbers.
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02GF74
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| posted on 27/2/09 at 03:19 PM |
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quote:
Originally posted by omega0684
how do you wire up the rev counter when using edis, does the edis give twice as many pulses to the rev counter as opposed to when not using edis?
hence does the rev counter read twice what the engine is actually revving at?
Rev counter senses pulses to LT side of coil. If you were to do the same for one coil pack - assuming you have 4 cylinders, you will get
1/2 the number of pulses. If your rev counter can be configured for 2 cylinders, then all will be hunky dory. Other counters connect to ECU; these
act on a 5 V signal - probalby. If you cannot select 2 cylinders, you can connect a doide to each coil pack and then to the rev counter. There have
been posts on this I am sure
sorry, i have the caerbont automotive rev counter, just opened the back up and it has 6 little switches on a chip 1,2,3 & 5 are switched down and
4 & 6 are switched up.BEWARE - those switches cannot represent the number of cyclinders; hence why you have 4, 6 down. You need
instructions or trial and error to set it up.
^^^ that assumes connection to coil pack(s) but without looking at my notes as I am about to clear off home  I recall EDIS will supply PIP which is
ignition event? I think that is 12 V signal, like to a standard coil, I would need to think about the 2x bit but reckon no adjustment is neceaary -
the coil pairs would fire at same rate, one coil firing unecessarily - wasted spark - but end result is the same.
I'll leave it to the next poster to corect me - my brain is overloaded with curry.
[Edited on 27/2/09 by 02GF74]
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daviep
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| posted on 27/2/09 at 03:36 PM |
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Try HERE
or
HERE
Cheers
Davie
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omega0684
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| posted on 27/2/09 at 04:22 PM |
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cheers for the link davie, mine is the older tacho (first link) i have set it to 4 cylinders (pinto) and the 5 & 6 switchs so that they represent
a petrol engine, but the 4th switch in both positions does nothing, i have the rev counter pick up wire connected to the second output on the edis
unit, cuz i can vaguely remember someone saying that that was the rev counter output, is this correct?
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