1961 Headlight connector wiring?

[61Chevy454]

I looked up a wiring diagram and it didn't clarify this:

I have three different wiring configurations for my headlights on the connectors:

1. Black, tannish and green wire
2. Two blacks and a green
3. Two tans, a green and a black
4. A red and a black.

The red and the black one is fairly obviously 12V and ground and is probably for the high beam bulb, but I have no idea about the others. Any help is appreciated

Thanks!

[rvrfoot]

I just in a new wires on my 66. Green Tan Black is ground.