Hi guys. I am currently working on a custom overhead console for my '91 XJ built to hold either my head unit or a CB as well as one of those gauge clusters that tells you the temp, direction, and tilt of your vehicle. I think I found the gauges I want.. but I am an idiot and don't know how to wire them so that when the key is on, they turn on. Thanks for any help.

 

What set did you buy? Are they mechanical or electrically operated gauges?