ok, i've been told that if i want to put an after market tach in 06zx4 that i need a tach driver. so my question is: if i can swap out gauge clusters and put in a one in with a tach and all you do is swap them out, what drives the factory tach? and why can't you tap into it? is the driver in the cluster? is cheaper and easier just find a used cluster? i've found a couple at a wrecking yard close to here for like $85 - $125, is that fair?
i know, a lot of questions... btw... this is a great community!