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Discussion Starter #1
when i first got my focus i was told that it was impossible to run a tach in the focus without using a tach adapter. well i was also told that about the old focus in which i ran the green wire directly to the computer, which doesnt work in the newer foci. well....... i found a tach at oreillys that said it worked for COP, so i bought it and (with this tach at least) i ran the green wire to the negative side of one of the coils....it worked! so just if anyone wanted to know i thought i might post this up for those wonderin? cause for a while i was
 

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BodyKits=PantiesDrop
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nice! i was thinking that your post would be "...and it didn't work" haha but i'm impressed that you figured it out! post pics of all the stuff and we'll be sure to update the stickies
 

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Max8
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So that tach is doing the same function that a tach adapter?
 

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Pics Pics Pics I Needa Do This!
 

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BodyKits=PantiesDrop
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^^well if you want to use a tach that is not compatible you would need one...
 

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Max8
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Also for a shift light, I guess....
 

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makes sense, sinse the negative is a switched ground on the COP's
 

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coil on plug
 

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What is a "tach adaptor"? Where/how do they normally hook up?
Maybe a link?
Thanks
 

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the tach adapter translates the crank position sensor(typically) into a signal the tach can read.
 

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is there any disadvantage to the cop tach?
 

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is there a write up on how to install one of these puppies cuz i really need one.
 

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is there any disadvantage to the cop tach?
that its easier then to wire in a tach adapter and then wire in a tach.... but ive found the wires inside the cabin, so you can make all of your connections inside the car.
 

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really might have to look into one
 

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the tach adapter translates the crank position sensor(typically) into a signal the tach can read.
HonHon >> Thanks. These would be useful for circuit inputs. Tad pricey though.

oldunclestevo >> Yes it moves the tach needle around, but how have you verified its accurate?

Others: The question that you need to ask, and it might be a bear to find, is what kind of output does any particular tach adapter produce, and is it within spec for the tachometer you want to use. Autometer as an example has there tach adapter for use with there line of tachometers and other products. The device found by Mr.Zx3 may not work (well) with Autometer. its really a question of amplification and shaping of the output signal however derived. If the signal strength is weak, or the duty cycle is to short then the tach will not be accurate (prob read low) and vice versa. I have always found getting the specs for most 'widgets' to be the major source of heartburn, so be warned it may take some digging. [wiggle]
Sorry! don't mean to rain on the parade here. Gauges are simple, Accurate gauges take a bit more work (or cash depending).
 

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Discussion Starter #20
HonHon >> Thanks. These would be useful for circuit inputs. Tad pricey though.

oldunclestevo >> Yes it moves the tach needle around, but how have you verified its accurate?

Others: The question that you need to ask, and it might be a bear to find, is what kind of output does any particular tach adapter produce, and is it within spec for the tachometer you want to use. Autometer as an example has there tach adapter for use with there line of tachometers and other products. The device found by Mr.Zx3 may not work (well) with Autometer. its really a question of amplification and shaping of the output signal however derived. If the signal strength is weak, or the duty cycle is to short then the tach will not be accurate (prob read low) and vice versa. I have always found getting the specs for most 'widgets' to be the major source of heartburn, so be warned it may take some digging. [wiggle]
Sorry! don't mean to rain on the parade here. Gauges are simple, Accurate gauges take a bit more work (or cash depending).
yes it is accurate...well its just as accurate as the tach every focus has programmed into it with the tripmeter. (hold trip reset button, turn to KOEO, release trip then hit it a couple times till it reads the tach) but yea it was right with the digitach. the only time otherwise is when i bump the throttle and it just suddenly jumps the the actual rpm. but ill try to get pics up soon
 
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