How do you hook up a voltage gauge to a battery?

0:051:02How to Install a Basic Volt Meter Video - Pep Boys - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe lights for the gauge are controlled by the output from the headlight switch and essentiallyMoreThe lights for the gauge are controlled by the output from the headlight switch and essentially thats it. If you have an S or sender port on your gauge. This is not used and should be left open.

How can you tell which wire is hot with a multimeter?

0:272:02How To Find Find Hot Wire Without Color Clue - YouTubeYouTube

What color is the hot wire?

Black Black wires Black. Black wires are “hot” wires, which means they carry a live current from your electrical panel to the destination.