Help for pin out

[marto_gp]

Hello,

My car is Chevy Cavalier 1990 year, 3100V6, Z 24.
What signal (ECM pin out) is from ECM to speedometer (electrical). My old speedometer is mechanical. Now I have gearbox from beretta on my car. I want to connect speedometer (electrical) from beretta to ECM on my car.

[IsaacHayes]

The wires off of the trans is purple/yellow IIRC that is the VSS. I take it you are swapping to a newer gauge cluster for the signal as well? And a newer ECM? Don't know the pin out the purple/yellow is all I know.

[marto_gp]

!!!

I search output speed signal for electrical speedometer from ECM. Purple/yellow is from gearbox to ECM. I will take only speedometer from beretta cluster.