When one is at a stop sign your volt meter will go down and your lights will dim but once you take off it will go up and since 1993 I have had no problems with my truck due to them. I'm telling you it will make a difference on power. If anything else ask away.
Hey guys look what's on TLC channel Helli-Loggers and if you don't like that show tune to Discovery channel Lost Treasures is on.
Be good! GMC 09:07 P.M. CST