2003 Chevy Impala tach wire

Thanks so much,

Because I am new at this, so I am not really sure which one is the distribotor. It is better that there is a picture.

You are right. I dont know that......

Here is a picture I get it on internet. It looks like my friend's car. Could you tell me which one is the injector?

Maybe this one looks much better as my feriend's car. It is 2000 Impala.

Thanks so much. I stay on line for your guy's answers.

My friend told me that tach wire should not work well because tach signal is not strong on GM car. Is it right?

And where is the injectors? Coudl you circle it out?

NowYaKnow wrote: If you look in my picture you'll see the circle near the back of the engine. All the spark plug wires should be going to this module, and there should be a wire harness coming off of this module. You want the white wire at this module. Feel free to unplug the wire harness (with the car off of course) if it makes it easier to tap into the wire. Also it looks like that blue wire I circled isn't fused.. If so, put a fuse on that before it causes any trouble.

Thanks your guys!!

I finish it and it work well now. In Impala 2003, It is the TAN/BLACK not the WHITE wire.I tried White wire but didn't work.  Only the TAN/BALCK wire works well. See the picture below:

I installed 3 remtoe start alarm. But I dont know what are the differents between the following tach detection ways.

I think the most common way is circle 5 rounds on Ignition coil :

Another way is directly connect to the wire who gererate volts when engine starting:

I dont understand the first way. How can it gererate volts when engine start? How much votls can it generate when engine is starting.