OK i am realy stupid but i need some help. I have a 85 camaro z28 tpi. I have a autometer tach and am trying to install it. I know where all the wires go except the green wire. I have no idea where it goes. I put it in where the stck tach goes but it is off alot . like the engine will be at 1500 rpm but tach says like 600? I have taken one tach back cause i just thought it was bad but this one does the same thing. Can someone show me a pic of where the green wire goes but with maybe a pic of good descrition of where. Thnx sry for my stupidity.. O both wires on back of tach are connected not cut. also what is the TACH Terminal and is there one on my ecm?? Thnx sry for the length.

 

What kind of tach do you have?
On the cheep voodo one from CT the green is the wire you connect to the coils ground

 

It is a Autogauge. My car has the hei ignition or whatever the camaros come with im not sure.

 

Do you have a HEI or ele ?
what year is your camaro?

 

It is a 85 camaro z28 and it is Hei

 

On the part of your coil that the wires plug in2 you will see it saying right on it Tach and bat. The power to coil wire will be pluged in the one that says bat and your Tach goes in the other.
there is a nother 3 wires that come out but they go to ground and your modual so dont bother with them.

 

OK so where do i put the green wire ? Right were it says tach? Thnx all try it tommaro and let u know

 

its not gona just stick on thoe. you need a female connector