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How to install aftermarket tachometer

2.4l engine. how do i wire a tachometer

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Tachometer signal for aftermarket unit, 2003 dodge ram 2500 van


You will need a wiring diagram but I suspect you can't install it without creating problems in the ignition system. If you can hook it up it will need to pick up its signal from the crankshaft position sensor output line.

Jul 25, 2017 | Dodge Cars & Trucks

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Tach green wire where it hooks to. coil or dist? 2000 GMC 5700 vortec


Aftermarket or factory tachometer? ignition coil pins A,B,C . B is white wire -this is tachometer signal to instrument cluster .

Dec 12, 2015 | GMC Cars & Trucks

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I have a 2003 spyder eclipse gts 3.0l how do i install a after market tachometer?


I really cannot tell you how to do that. You need to follow the instructions that came with the tachometer.

Please note: I would be very cautious about connecting aftermarket equipment into your computer input or output circuits. These things have been known to cause all kinds of drivability problems as well as make it impossible to pass an emissions test (if it is required where you live).

I have personally seen aftermarket add-on equipment cause everything from engine cylinder misfires to transmission shifting problems to engine stalling and no-starts. I do not recommend using any at all. However, there are usually no problems created by "stand alone" accessories that are powered directly from the battery and do not require splicing into any of the computer circuits.

My professional recommendation on this is that if you think you need a tachometer to operate your vehicle, or you just like the looks of a tachometer bouncing up and down, then you would be money and headaches ahead to buy a vehicle that is equipped with a tachometer from the manufacturer - you may be opening a can of worms that you do not want.

This is just my opinion based on 37 years of experience diagnosing and repairing automobiles (and having to clean-up aftermarket add-on messes) - do with it as you wish.

Nov 10, 2011 | 2003 Mitsubishi Eclipse Spyder

1 Answer

Replace normal engine in 87 supra with turbo 7mgt, complete with harness and computer. the tac did not work, the temp gauge reads hot at all time, key on engine not started it reads hot. changed cluster...


Check for crushed/shorted wires.
Check part numbers to verify model compatibility.
If to no avail install aftermarket tachometer and turbo boost gauges.

Sep 21, 2017 | 1987 Toyota Supra

1 Answer

Rpm needle flutuates when driving


If it is an aftermarket tachometer then you may have to install the resistor that came with it. If it didn't come with a resistor ask an auto-electrician about it, they should know. If it is a factory tachometer you may also be able to try and install the resistor onto coil wire at the back of the tachometer. if you haven't got experience in this area i would suggest you find someone who does.

Dec 27, 2010 | 1996 Toyota Celica

1 Answer

I want to install an aftermarket tachometer in a 1997 Mazda Protege Dx, which does not utilize a coil in it's ignition system. Anyone knows where to get the signal from? Thanks!


some tachs can take the signal from one of the spark plug wires; you just thread the wire into the bood with the plug, or into the other end of the spark plug wire.

Mar 31, 2010 | 1997 Mazda Protege

2 Answers

Install aftermarket tachometer


I'll take a stab at this, there's better than a 50-50 chance, and you can do no damage if the first try is wrong. Red is +12 volts and Black is chassis ground. that's a given. I would try Blue to coil pack "Tach" terminal, and Green for the dashlight. If I am right about the Blue and Green, a 9-volt battery from Green to Black will light the light if it's not burned out. If the Green doesn't light it, try the Blue, but my bets on the Green. If the Blue doesn't light it either, the bulb is toast.

May 08, 2009 | Ford Bronco Cars & Trucks

1 Answer

Dodge ram50 1992 swap 2,4L to 2,6L


Greetings!

Yes, the engine mounts and bell housings are the same.
The swap should be straight forward, however be sure to swap all the vaccum controls and emission system from the 2.6L.

Have fun!
Cheers, Jay

Apr 29, 2009 | 1992 Dodge Power Ram 50

1 Answer

Aftermarket tachometer in 91 cavalier???s


purple/white off the ignition module is your tach signal

Oct 13, 2008 | 1991 Chevrolet Cavalier

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