Anyone ever do this, where do i plug the red power wire to, and the other wires do I just match to the wires going into the dash boxes, also I have 3 dark brown wires, which one is the tach

 

There are three contacts that the original water temperature gauge "plugged" into. Looking at the cluster from the front, hook the red wire to the prong on the right. The black wire goes in the upper prong.

Out of the brown wires, there's two that are twisted together. That's the VSS signal, so it's not that one. It's the remaining brown wire.

 

I am still lost, the wiring to the circuit board is complete, i need to know how to wire it to the car.

 

does anyone have the install manual for it I was given one by a freind because he sold his car but he did not have the instructions

 

I might. What's the model number?