ok well i installed an auto meter monster tach in my 96 trans am and the damn thing if off . I wired in into thewhite wire coming out of the C230 blue plug on the passenger side kick panel. Whenever i am at idle about 1000 on my dashboard tach , it shows about 2000 on my autometer, and the higher i rev it up or whatever the more it gets off, so if i rev it up to about 3000rpm it shows about 6000rpm on the autometer, and whenver i am driving and hit my shift point on my dashboard tach about 5200rpm it goes all the way up to 10,000 rpm on my autometer tach!!! :wtf: does anyone know what the deal is?

 

not sure if this would help but i had to cut the brown and orange wire on the back of the tach because my tach was doing the same till i cut them.

 

well i got this tach from my friend and the wires are already cut so

 

Put the tach settings on 4 cylinder instead of 8 and your problem will be cured.
If you want to know why then do a search, its been covered eleventy billion times.

 

How to I switch it to 8 cylinders? Its an autometer autogauge monster tach

 

you know those wires that are cut?

put them back together.

then it will be on the correct mode for you car.

and not being a ***** at all but the user above is 100% right this problem is about as common as "my LSX has a tick"

 

So what do I need to do? Like am I supposed to wire the brown into the orange ?

 

http://autometer.com/productPDF/1244.pdf

look at the second page where it shows how to set the tach to 4cyl. cut the orange and brown wire the rest of the wires need connected.

 

Yer not getting it, you want it set for FOUR cylinders, you already have it set for 8 and its not working out for ya very well is it???