Tach wires on Rallye Cluster - What colors and which is which?

[BigmanjbMOPAR]

Got the cluster out and see a tan with black trace with a female connector on it and a blue with a post female connector... which is for the tach or are both of them used? Also which wire in the engine harness is the tach wire?

[BigmanjbMOPAR]

Never mind I see the wiring diagram post its the tan with black trace goes to the negatuve on the coil. Blue is for lighting.