1998 Dodge Stratus Aftermarket Tach Install

I need help to find out where the green tac signal wire goes I tried off tge coil but only gives me half signal please helpChristopher rosek

There's two wires listed for tach here: https://www.the12volt.com/installbay/alarmdetail/91.html You can pull up wiring diagrams here (bookmark this page): http://www.bbbind.com/free-tsb Under Engine/Fuel Controls: http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=13552 Scroll down to page 3 for the ignition coil. You need 2 diodes and a resistor to sum both of the coil driver wires. Connect the cathode of one diode (striped side) to the black/grey wire at the coil (pin 3). Connect the cathode of another diode to the blue/grey wire at the coil (pin 1). Connect the anodes (sides opposite the stripes) together. From there, connect a resistor (300 - 1000 ohms) to a 12 volt ignition source. Connect your tach wire to the joint between the resistor and the diodes. My ex once told me I have a perfect face for radio.