inputs.text: easy audio control - installed next drivers seat not like asking guests change songs volume crusing requires 34 mounting hole drilled access rear bracket 4 wires 12v ground signal wire goes radio illumination wire knows best tell unit not back lit really not know purpose wire isinstall fairly easy though provide wire connectors get radio power supply turn radio rehemote not back overall pretty happy hope hold time comethe 12v line comes 1a micro fuse little holder need take fit holder 34 hole signal line comes barrel type fehemale quick connect end case happen wire fit wish use not sure advantage would lines not sort quick connect fitting probably not rehemoving rehemote frequently cut mine