i have a 96 civic hatch with a stock cluster. i have the Ractive tach but all i need know is what wire goes to what. there are 4 wires.... red im guessing is positive, black is ground, and then theres a yellow and green wire. one must go to the distributer but i dont know which one. and i dont know which wire on the distributer. after i figure that out then im gonna need to figure out what the extra wire is used for ......PLEASE HELP!

 

normally green is the parking light wire witch would go to any red/black in the car . and there is a tach test connector under the hood by 1 of the struts i think drivers side on that car its a 2 pin connector with 1 blue wire going in it and is connected to nothing. its a sitting duck to hook up , dont be scared .