Noob question; Installing intellitronix digital gauge, (tw: LOTS OF DUMB QUESTIONS)

I'm a bit worried about headlights. They have NOTHING to do with your cluster project, unless a loose connection somewhere is jiggling other wires. Re-read the post earlier where I ran through the path of the headlights. Post 53. Last thing you want when you are driving is for the HL to quit working!!