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Old 02-05-2006, 05:54 PM   #41
zspradlin
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Sparky got a question for you.

I just got a copy of the 2005 wiring diagram shop manual and I'm trying to figure something out. Going from the PCM to the instrument cluster, connector C2220, is there a viable tach signal in that harness or does the processor in the cluster use a different signal to calculate RPM? I've got an S model and I'm going to be installing a tach, with an FR driver.

I have yet to buy a tach, what are you using??? I'm not too sure about buying a 5" monster, although I do like the FR 5" tach.


BTW, about 128 days till J1 on D35. I'm hearing that the first 5k-10k are going to Mazda in Japan.
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Old 02-07-2006, 04:59 PM   #42
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sparks you is the shiznit man preciate the help. how did some one figure that out ?
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Old 02-07-2006, 06:55 PM   #43
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Quote:
Originally posted by zspradlin

I just got a copy of the 2005 wiring diagram shop manual and I'm trying to figure something out. Going from the PCM to the instrument cluster, connector C2220, is there a viable tach signal in that harness
-no-
Quote:
or does the processor in the cluster use a different signal to calculate RPM?
-yes- There is not a "tach signal" like the old days, data is sent digitally and the cluster decodes it and moves the needles in the gauges (even the speedo) to the proper spot. They call the system CANBUS, its a means of multiplexing a great deal of information with the minimal amount of wires.
Quote:
I've got an S model and I'm going to be installing a tach, with an FR driver.
The HowTo I wrote on how to install the FR tach driver should apply to your car, even has pics. Wire it from inside the car.
http://www.focusfanatics.com/forum/s...threadid=54447
Quote:
I have yet to buy a tach, what are you using??? I'm not too sure about buying a 5" monster, although I do like the FR 5" tach.
I have a Stewart Warner GUS (Guage Ultra Shift) which is a tach and a shift light at the same time. It's in an A Pillar Pod with an Autometer DPIC. I like performance, but I'm not a professional drag racer (nor do I want to pose as one) so personally I don't like big aftermarket tachs (just my tastes, to each their own).
http://www.sw-performance.com/produc...?productid=395


The pic is a little washed out because of the camera flash, the face in reality is very dark.
Also, personally I turn off the digital tach display as I have an analog tach in my ST.
Quote:
BTW, about 128 days till J1 on D35. I'm hearing that the first 5k-10k are going to Mazda in Japan.
Good to hear, any idea why to Japan? Durability testing?
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Old 02-13-2006, 09:00 PM   #44
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thanks for the great write up...i have one question though...1) you mention that this would work for a 2005 2.3Lduratec focus, what about a 2005 2.0L duratec focus...would this work as well?? Or would you recommend me just tap into the cps as the instructions say???
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Old 02-15-2006, 12:35 PM   #45
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Quote:
Originally posted by nikkfocuszx3
thanks for the great write up...i have one question though...1) you mention that this would work for a 2005 2.3Lduratec focus, what about a 2005 2.0L duratec focus...would this work as well?? Or would you recommend me just tap into the cps as the instructions say???
Sorry for the late reply.

The HowTo will work with the 2.0L Duratecs as well.
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Old 04-24-2006, 10:57 AM   #46
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Quote:
Originally posted by Caleb
yeah so scratch the whole tach driver thing. i tried the pin 48 on the pcm and it worked! no need for the tach driver. now i have to sell it. oh well i finally have a tach in my car after 2 and a half years. thanks for all the help OAC_sparky.
Caleb, how does the pcn looks like in ur spi , i need to find that 48 pin thx
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Old 04-24-2006, 01:58 PM   #47
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well once you get to where it is there should be a screw on top that you remove and once that is out the plug itself will slide out. the part where all the wires go in is where the numbers are. you will have to gently spread the wires apart to see them. once you do that just find where #48 is and shove the wire down in there. plug the thing back in tighten the bolt and you should be good to go. i think there was a black plastic piece that was involved in there somewhere that i couldnt get back on. if i remember correctly it covered the whole plug maybe. but it didnt seem important. anyway let me know if you have any other questions.
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Old 07-20-2006, 07:16 PM   #48
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So I tried this today, and I am stuck. I am using splice taps to connect to the two wires, and I'm guessing they're not getting contact with the ECM. My tach, its power light, and the Tach Driver are all connected to the same fuse (radio/acces.).. my tach light is coming on, but it's not getting any tach signal. Tach is set to 8cyl, as per tach driver instructions.

Do I have to push harder on the wire taps in the ECM plug to get this to work?
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Old 07-20-2006, 08:08 PM   #49
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Nevermind, I got it. It's nice having a tach finally.
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Old 09-05-2006, 12:16 PM   #50
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So even on the 05-06-07 2.0 duratecs, the pin 48 things wont work?

I am doing this install soon, I just want to make sure of things before i dive right in.
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