Just need to know what wire to i connect to on the icm to get the proper rpm reading

none....you gotta get a tach adapter, any aftermarket tach that i know of will only read half the rpms


You'll never touch God's hand
You'll never taste God's breath
Because you'll never see the second coming
Life's too short to be focused on insanity
I've seen the ways of God
I'll take the devil any day
Hail Satan

(slayer, skeleton christ, 2006)

i read on rksport that if you have a factory tach you don't need a tach adapter

You don't need a tach adapter if your swaping in a speedo cluster with a tach. you DO need an adapter if your adding an aftermarket tach though.

Now I thought all Sunfires and 03+ Cavs and came with a stock tach... is this not so?

yes it has stock tach but the person wants to add an after market tach. So i told him i would try and see if he needs a tach adapt or not

you need a tach adapter unless....you have a tach that you can adjust the # of cylinders on. like on my stewart warner tach i can adjust for 1-12 cylinders. i just set it for 2 and it reads right



I used to race cars, now I race myself.
5K PB: 24:50
10K PB: 54:26

ok thanks for everyones help i'll tell him to buy the tach adapter cause the tach he has on does 4 6 8 cylinders

thank you all