[mustangduende]

I bought a 2 1/16 tachometer from Glowshift, i connected all the wires, however, there is a wire that must be connected to the negative wire of the coil. I have a 2000 v6, and the coil has 4 wires, how can i know where to connect it? I dont have any idea of what to do, because i asked the ford dealer and they said that that coil must have 2 negative wires.

Please help me.

[shinerstang]

99+'s need tach drivers in order for them to work.......

[mustangduende]

what is a tach driver?