Is anybody out there running a Sun Super Tach II? I have an old one that I'm trying to install, but I can't figure out which order to place the wires going into the back of the tach. There are four prongs in the center hole, and I need to know where to put the red, black, green, and white wires.
Thanks,
Ethan

1971 Dodge Charger SE 470/727/3.91 Suregrip
2016 Dodge Challenger Hellcat, 6-speed
1980 Pontiac Trans Am, Y84, WS6
2002 Ram 2500 Cummins/6-speed/2WD/QC
1971 Ford F-350 Ranger