I have these gauges and Intelletronix really stands up for there Lifetime warranty. I purchased a bunch of parts from a forum member a few years ago and a very old set was in there (made back when the company was 2001 technologies) I wired them up and had issues with a couple of the gauges. I tracked down Intelletronix, told them what I had and that I was not the original purchaser I was just looking for some advise on how to adjust or if it was even possible. They told me to send them in they have a lifetime warranty. I sent them in and about 6 weeks later I had a brand new set! Great company to work with!