Tach Wire

Just wondering how you'd go about finding a tach wire without probing and risking blowing a module. Thanks in advance for any info...peace

You could just grab the one in the wire diagram as long as you know that you are grabbing the wire you know is exactly the one the diagram is referring to.J Rilla

Owner/Installer

yeah....what he just said works, but only when it works

That's not always true dude.  I've had more than one wire with the same color pattern running through the same place with different functions.  Damn that pisses me off....

Your guys' posts really helped me out...thanks eh!peace

If you have a particular car in mind I am sure someone on here is familiar with the car and could tell you. But if you are referring to cars in general, there is no reason for anyone not to test using a DMM.  I can understand if you have one car and dont want to buy a DMM even though you could buy a $25 radioshack model that isnt great but it works.   let us know more information if you have anyJ Rilla

Owner/Installer

Just to add to this post, watch out for those cheap DMM's because they may not always give you the proper voltage in AC mode. Spend a little more and you get a little better quality.Jeff

Velocity Custom Home Theater

Mobile Audio/Video Specialist

Morden, Manitoba CANADA

I do have a DMM but am not to familiar how to use it entirely...where would I hook it up and what reading should I look for? With the right reading how do I know for sure it is the tach wire?Thanks...peace

Put the meter to AC voltage, put the red lead on 12v+ and the black lead on the target wire. you should get a reading between 1 and 6 volts AC and it should increase when the gas is pressed.J Rilla

Owner/Installer