I had Katzkin installed in my F150. My dealer arranged everything. Even they were impressed with the outcome and took many pictures. Three years of heavy use and they were still almost like new.
Correction to my previous post. Ford said dropping to 12.3 and up to 15.1 was normal. My automatic power device dropped at 12.7. This happened infrequently but did happen and was annoying as the radio shut off and then would come back on.
Ran into this similar issue with my ICOM 400 when I installed an inline device to auto on and off the radio. The device was set to auto off as voltage reached a certain level. Try turning on your battery gauge and watch how much it fluctuates under normal driving conditions. I was going down the...