Fuse for Night-Time Dimming

[angusmcraptor]

I have a 2018 Raptor and adding some gauges which have auto night-time dimming. I need to know which fuse to use which is for the headlights source? FYI, I’d prefer to extend the fuse rather than tap into a wire.

 

[angusmcraptor]

I have a 2018 Raptor and adding some gauges which have auto night-time dimming. I need to know which fuse to use which is for the headlights source? FYI, I’d prefer to extend the fuse rather than tap into a wire.

OK. I give up. I went through the cabin and engine compartment fuse panels with a volt meter and could not find a fuse that is only active when the headlights are on. So, any guidance on which wires in the area behind the center of the dashboard (under the tray) I should use will be appreciated.