Works on 05+ GM vehicles with the square 2 pin PCM regulator! This regulator can be purchased on the site as well for making any non GM hairpin compatible.
Adjustable voltage up to 15.4v +/- .2v
*the screen on the controller does not display voltage, it displays the settings needed to control the voltage*
Comes with detailed installation instructions.
This product will last longer if mounted to a surface or inside a glove box or center console. Do not leave in direct sunlight as it may damage the screen.