1969 Console Tach Wiring?

I'm trying to ring out the wiring on my factory console tach.
The two connectors were cut off by a prior owner.
After straining my eyes studying the FSM wiring diagrams, I have come up this conclusion.

Orange wire - 12v to Tach lamp.
Black wire - Ground wire.
Green wire - Negative side of coil
Violet wire - +12v to power tach.

You guys in the know. Does the above look right?