My factory ammeter doesn't work on my 67 Chevelle SS 396. I have 2 wires that come from behind the instrument cluster (pink and green) then go to a connector plug that is fastened to the steering column, then changes to green and dark green and continues on to the firewall. In the engine compartment, these 2 wires (green and dark green) are not connected to anything. Does anyone know where these wires are supposed to go? and are these the wires for my ammeter or are they for something else?