Bought a console from a 67 Dodge for use in the '66 300M Club Sport. The factory tach has three wires plus the light wire. Do these connect to some sort of tach sending unit that I don't have or just to hot, ground, and coil. Probably the 65L fourspeed tach is the same as this Dodge. How is the message received on these factory tachs? Larry W Jett 950 Woodside Road Suite 4 Redwood City CA 94061 650 368 3966 [Non-text portions of this message have been removed]