Prosport Oil Gauge Question
 

This is going in next week, but I have a wiring question.

All the wires make sense except the Orange Wire. Directions say it goes to the Headlight Switch (12v power when lights are on). What should I connect that to?

I am also interested in this. I have one that i haven't got around to installing yet.

My dimmer wire is tapped into the "panel" fuse (10amp)

I'll try that, TY