green wire on aftermarket tachs are the signal wire i belive
steal signal from the white wire w/ black sripe on the bottom plug of ecu.
Hook up the red wire to the fuse box or another wire that gives power when the key is on. Hook up the white wire to a wire coming out of the headlight switch. This will make is so that when you turn your headlights on, the light will come on on the tach. If you don't mind the light on the tach being on all the time then just hook it to another power wire. Hook the black wire to a ground like a screw or a bolt. The green wire is the signal wire. Run it through your fire wall. Hook it up to the negative side of the coil. There will be a negative sign on the coil denoting the correct side.
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
to hook up the tach use the hot lead on the disributor and to any good ground wire and if there is a light hook it to the wire on you light switch
tach signal wire is a blue wire with a black cap that ends on the top of the strut tower near the firewall...done
You would hook to the negative side of the coil. Some HEI distributor caps are marked "tach".
Tach signal wire is located at the PCM near the connector. Use the manual should there be need for help in locating it.
hook your green wire from the tach to the white wire from the coil PAC it should be a white and a yellow wire coming from the coil. the tach should have a white wire that will be your light inside the tach a red wire for power and a black for ground.. good luck
DISCLAIMER: I am not responsible for your actions You need an ECU diagram of your vehicle. Find the correct pin # and find the wire that attaches to it. Use a wire tap and run that wire as the signal wire to your new tach
On the distributor cap there is an extension that juts out toward the driver side. underneath this are two wire terminals. they should be marked on the top of the cap "Tach" and "Batt." A wire with a male spade end crimped onto it fits into the "tach" terminal and provides a signal for your tachometer to use.
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.
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.)
Hook it to the negative side of the coil.
Since the coil is in the distributor, simply hook the tach 'trigger' wire to the out put on the side of the distributor cap marked 'tach'.
one white wire goes to the distributor, the other goes nowhere. This is the lead that goes to the tach
Its EASY! just connect the (usually green) wire to the negative post on the coil. Hook up the power wires and the illumination wire and ground for the tach wire and ur done its easy!
pin 48 on the pcm connecter is tach signal connect to your green wire from tach
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.
Negative side of the coil. David G,
If your car has a distributor it is the negative on the coil.
You should be able to use the power side of Injector #1 for the tach signal
The tachometer signal output wire in a 2008 Scion XB should be violet/white. In the manual this wire will always be number 5.
u have to look at ur distributor if it is an HEI "coil on top there is markings on the distributor cap for the tach but if it is a regular distributor with an external coil you hook it up to the neg wire off the coil neg/ black wire
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".