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Where is the tach signal wire on a 1998 Crown Victoria?

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2005-10-10 01:37:52
2005-10-10 01:37:52

If your car has a distributor it is the negative on the coil.

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pin 48 on the pcm connecter is tach signal connect to your green wire from tach

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Instructions should come with the tach. Otherwise, contact the tach manufacturer.

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I havent found the location yet but im currently looking into it, but you have to find the tach lead, I know the lead exists but i cant find it yet

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Green is usually trigger which should go to the negative side of the coil.

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Tach signal wire is located at the PCM near the connector. Use the manual should there be need for help in locating it.

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Tach is driven by a motor signal, speedo is from the trans the sensor is bad on the transmission

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From a crankshaft speed/position sensor.

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You should be able to use the power side of Injector #1 for the tach signal

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are you talking about a sm. block hei. dist. if so there are 2 spade connectors on the side of the cap , one says tach. The tach signal comes from the negative side of the coil.

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At the dist there should be one to power the dist. & one for tach signal. Unplug one & see if car starts or if tach still works. Can't really remember for sure as its been a while lol. My 1972 tach wire is brown and it has a inline fuse from the factory. Your tach wire will be connected to the negative side of your terminal witch is labeled "tach".

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Remote starters can use the AC signal from the alternator as an alternate signal which is not produced until the engine is running. On most cars if you access the PROPER wire for the tach it almost always is strong enough. Double check your wiring diagrams and make sure you are accessing the correct wire from the coil pak or ignition coils.

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a factory cluster with a tach will work if installed w/o any other work. and aftermarket tach needs the signal wire from the distributor. look for a blue wire comming from the harness to the right of the master cylinder area. also near the hood prop. tap that wire for signal, then run your wires for power, ground, and illumination.

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not directly... The tach gets its signal from the crankshaft sensor. the signal is processed by the computer where it determains spark timing, fuel ratio and other things. information is relayed via wires to the back of your insterment pannel, and are converted into readable units on your tach. Same with the odometer, it gets its signal from the computer via speed sensor. being you lost both functions on your pannel, i would suspect a faulty cluster.

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Your Tach Signal wire is Gray and Dark Blue (Gray/Dark Blue). Same wire, marked with both colors. This means the wire is GRAY with a dark blue line through it. It is located at the Coil pack on top of valve cover. --- This wire above is a 2 Cylinder Signal. 3.0L Tach Wire is GRAY/RED at Powertrain Control Module (PCM). 3.3L & 3.8L Tach Wire is GRAY/RED, DARK BLUE/TAN And RED/YELLOW at PCM. (Each wire is a 2 cylinder signal.)

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steal signal from the white wire w/ black sripe on the bottom plug of ecu.

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The tach signal to the cluster is not on a dedicated wire. It comes over the CCD data bus. Which is a pair of wires that the computers on this vehicle use to transmit messages and information.

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MSD had a module a few years back that would convert a tach signal. Not sure hear da rumor about using a wire off the obdii port, but never seen anyone with a mitsu do it and work. Have seen the MSD tach adapter work superbly.

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there is a white almost tanish looking solid color wire on the group of wires that plug into the guage cluster use a quick connect to connect the signal wire from the tach to the white wire on the guage cluster

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Connect the green wire to the brown striped black wire.


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