Are there empty slots in the place on the connector where the white wire and the green wire are suppose to be?

Is it possible your old harness that you replaced had burnt or broken wires, or the connector is bad at the correct locations, so someone relocated those two wires to a different position that wasn't being used so it would work for them?

Its possible the green wire is for the horn. If you hook to a test light clip to a power source, and touch the green wire in the column harness, does the test light light? Does it light if you push the horn ring like you want to honk the horn? Gene