Radio/Navigation System Schematics
Fig 2: Audio Amplifier Power, Ground, And All Audio Inputs - UQG, Front And Rear Audio Inputs - UQA/UQS - Schematic
Fig 3: Audio Amplifier Power, Ground, And All Audio Inputs - UQG+UK6, Front And Rear Audio Inputs - UQA/UQS+UK6 - Schematic