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EF tacho terminal 

 

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 Post subject: EF tacho terminal
Posted: Tue Oct 09, 2007 11:02 pm 
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Can someone please confirm for me that

Quote:
Pin 7 Tacho Input Pulsed Pink / Dark Blue


is the wire I want to connect to a shift light (well it's not actually a shift light, but it's an adjustable rpm switch of the exact same principle) on an EF GLi I6?

Last edited by twr7cx on Wed Oct 10, 2007 10:14 am, edited 1 time in total.

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Posted: Tue Oct 09, 2007 11:03 pm 
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Tacho input wire on the right hand side plug going to the cluster sounds about right
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Posted: Wed Oct 10, 2007 10:14 am 
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title should say Tach not tech.

anyone know anything about a resistor between the ECU and dash due to the dash not drawing that much current? so i need to take it from the ecu then.
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Posted: Wed Oct 10, 2007 10:22 am 
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should be the same colour.
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Posted: Wed Oct 10, 2007 10:37 am 
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you can also get the tacho signal from the diagnostics connector (in my first eb i ran a tach from it)

 

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Posted: Wed Oct 10, 2007 5:11 pm 
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I used the diagnostic tach line for a shiftlight, it didnt seem to be a clean signal, was inconsistent.
Worked okay if I set the shift RPM at under about 3k, but then it became utterly pointless.

Might have been a problem with just me, but when I did a search it seemed others had the same problem.

 

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Posted: Wed Oct 10, 2007 5:34 pm 
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Steady ED wrote:
I used the diagnostic tach line for a shiftlight, it didnt seem to be a clean signal, was inconsistent.
Worked okay if I set the shift RPM at under about 3k, but then it became utterly pointless.

Might have been a problem with just me, but when I did a search it seemed others had the same problem.


What wire did you end up using?
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Posted: Wed Oct 10, 2007 8:50 pm 
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I got off my a*** and installed my Crane HI-6 and just used the tach output from that :oops:

I'd say the ECU/Dash is your best bet

 

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Posted: Thu Oct 11, 2007 12:20 am 
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Have a read of http://www.fordmods.com/forums/beta-tes ... 39032.html .
Bit long winded, but bear with it.
Since your running an EF I6 you will have a clean enough signal if you go off the tacho line, either off the cluster, or the diag port.
The dizzy/TFI models are different, but on EL's, you can still use the tacho line - steer clear of the diag port. EA/EB/ED's need to tap into ECU pin 36, unfortunately, their tacho data comes straight off the coil -ve, which isn't a clean signal. So it's best to use the 'SPOUT' signal from the ECU, instead of the ignition coil pulse.

 

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Posted: Thu Oct 11, 2007 2:08 am 
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snap0964 - someone on FFAU reckons that I need to take it off the ECU not the cluster as they say there is a resistor somewhere along teh line due to the cluster not needing full power or something like that - do you know anything about that? would make my life easier if I could take it off the cluster...
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Posted: Thu Oct 11, 2007 2:50 am 
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I've already told you what you should do, that's why I add the link for some background info also.
You also have the ford shop manuals to refer to http://www.fordmods.com/forums/viewtopic.php?t=55169 .
Use them to confirm or deny whether a resistor comes into play.

I already know the answer - too many people on here want to be spoon fed - I'm trying to get you to use a bit of nouse and nut out the answer for yourself - you have more than enough info to go on to decide.

 

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Posted: Thu Oct 11, 2007 7:43 pm 
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Hmmmmm... It's got these little funny things in the line which I think are resistors.

EDIT: just looked at the index and they're electrical connectors.

Only other thing is a circle where it branches off to the cluster, but it think this is to represent the split at the T intersection.

So I think all will be good now with using off the cluster.

Cheers.

PS being spoon fed is just so easy! :D
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Posted: Fri Oct 12, 2007 12:36 am 
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You're learning 8-) .
Once you get some practice at using those wiring diagrams, you'll master them fairly quickly. The shop manuals have excellent info - so use it, don't rely solely on hearsay on what someone says (even me).
twr7cx wrote:
So I think all will be good now with using off the cluster.
In the EF's hooking up to the tacho wire at the diag port is the same thing - you can test it there first without chopping any wires.

twr7cx wrote:
PS being spoon fed is just so easy! :D
It is, but you don't learn any new skills - this is what earns you more value in the marketplace, not just here.

 

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