What wires are these on the 86 200x?

[Twilight]

Highly confused on what these 3 wires do...

http://i76.photobucket.com/albums/j27/TwilightOfHeaven/DSC_0527.jpg

[200xman]

The green and brown wires are the lighting wires for the optional speedo and I think the white one is for the optional tach.

[DeePa]

all 3 are for the headlight. the speedo and tach have couplers to just add on to teh existing harness and still be able to use the headlight

[Twilight]

I already have the headlight... and it works great. Hmm so maybe a speedo huh? Thats cool, i'll follow the wires and see where they go.