Stereo & Electronics - 12-Volt Dash Light

Sorry for the noob question. I'm installing a digital n20 pressure gauge on my pillar. Where do I tap into a 12-volt dash source so the gauge will dim when the lights are turned on?

BTW, it's for a 2000 Formula.

headlight switch or dimmer switch

So I can tap in directly to the headlight knob? Makes sense!

you should be able to tap into any wire that has 12+ when the lights are on.